Search
Find a vulnerability
Search criteria
26 vulnerabilities found for Cisco Open Source Snort3 by Cisco
CVE-2026-76524 (GCVE-0-2026-76524)
Vulnerability from nvd – Published: 2026-10-21 16:18 – Updated: 2026-10-21 16:18
VLAI
EPSS
VEX
Title
Open Source Snort 3 Control Channel Socket Aribitrary Command Execution Vulnerability
Summary
A vulnerability in the control channel socket implementation of Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user.
This vulnerability is due to a lack of authentication when a local user connects to the Snort control channel socket. An attacker could exploit this vulnerability by connecting to the Snort 3 control channel socket as a local user. A successful exploit could allow the attacker to execute arbitrary commands as well as read and write Snort 3 process memory.
Severity
7.8 (High)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the control channel socket implementation of\u0026nbsp;Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user.\r\n\r\nThis vulnerability is due to a lack of authentication when a local user connects to the Snort control channel socket. An attacker could exploit this vulnerability by connecting to the Snort 3 control channel socket as a local user. A successful exploit could allow the attacker to execute arbitrary commands as well as read and write Snort 3 process memory."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-306",
"description": "Missing Authentication for Critical Function",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:18:12.052Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-opensrc-snort3-2fXGJPfe",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-opensrc-snort3-2fXGJPfe"
}
],
"source": {
"advisory": "cisco-sa-opensrc-snort3-2fXGJPfe",
"defects": [
"CSCwv48789"
],
"discovery": "EXTERNAL"
},
"title": "Open Source Snort 3 Control Channel Socket Aribitrary Command Execution Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-76524",
"datePublished": "2026-10-21T16:18:12.052Z",
"dateReserved": "2026-08-19T12:02:03.643Z",
"dateUpdated": "2026-10-21T16:18:12.052Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-76489 (GCVE-0-2026-76489)
Vulnerability from nvd – Published: 2026-10-21 16:17 – Updated: 2026-10-21 16:17
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Generic File Processing Memory Exhaustion Denial of Service Vulnerability
Summary
Multiple Cisco products are affected by a vulnerability in the memory management implementation of Snort 3 that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to incomplete error checking when Snort 3 processes files, which could cause unreleased memory. An attacker could exploit this vulnerability by sending a large number of files to be processed. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition.
Severity
5.8 (Medium)
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.4.7 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.4.7"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the memory management implementation of Snort 3 that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r\nThis vulnerability is due to incomplete error checking when Snort 3 processes files, which could cause unreleased memory. An attacker could exploit this vulnerability by sending a large number of files to be processed. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-401",
"description": "Missing Release of Memory after Effective Lifetime",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:17:23.396Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-misc-dos-6mB22qAK",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK"
}
],
"source": {
"advisory": "cisco-sa-snort3-misc-dos-6mB22qAK",
"defects": [
"CSCwr25134"
],
"discovery": "EXTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Generic File Processing Memory Exhaustion Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-76489",
"datePublished": "2026-10-21T16:17:23.396Z",
"dateReserved": "2026-08-19T12:02:03.640Z",
"dateUpdated": "2026-10-21T16:17:23.396Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-76445 (GCVE-0-2026-76445)
Vulnerability from nvd – Published: 2026-10-21 16:14 – Updated: 2026-10-21 16:14
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Denial of Service Vulnerability
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the detection engine to unexpectedly restart, resulting in a denial of service (DoS) condition.
The vulnerability is due to a flaw in logic handling when General Packet Radio Service (GPRS) Tunneling Protocol (GTP) extension headers are processed within the codec. An attacker could exploit this vulnerability by sending a crafted, fragmented UDP datagram that contains these headers to the Snort 3 Detection Engine of an affected device. A successful exploit could allow the attacker to cause the detection engine to enter an infinite loop, resulting in a DoS condition.
Severity
5.3 (Medium)
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.12.3 Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the detection engine to unexpectedly restart, resulting in a denial of service (DoS) condition.\r\n\r\nThe vulnerability is due to a flaw in logic handling when General Packet Radio Service (GPRS) Tunneling Protocol (GTP) extension headers are processed within the codec. An attacker could exploit this vulnerability by sending a crafted, fragmented UDP datagram that contains these headers to the Snort 3 Detection Engine of an affected device. A successful exploit could allow the attacker to cause the detection engine to enter an infinite loop, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-835",
"description": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:14:39.374Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-gtpcodec-dos-Rmecfepz",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-gtpcodec-dos-Rmecfepz"
}
],
"source": {
"advisory": "cisco-sa-snort3-gtpcodec-dos-Rmecfepz",
"defects": [
"CSCwu17795"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-76445",
"datePublished": "2026-10-21T16:14:39.374Z",
"dateReserved": "2026-08-19T12:02:03.635Z",
"dateUpdated": "2026-10-21T16:14:39.374Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20356 (GCVE-0-2026-20356)
Vulnerability from nvd – Published: 2026-10-21 16:13 – Updated: 2026-10-21 16:13
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20356 are related to issues concerning uncontrolled resource consumption that are grouped under the Common Weakness Enumeration (CWE) Base CWE-400.
Severity
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Affected:
3.0.0
Affected: 3.0.2 Affected: 3.0.3 Affected: 3.0.1 Affected: 3.1.0 Affected: 3.0.4 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.2.0 Affected: 3.0.5 Affected: 3.2.1 Affected: 3.0.6 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.2.4 Affected: 4.0.0 Affected: 4.0.1 Affected: 4.0.2 Affected: 4.0.3 Affected: 4.1.0 Affected: 4.1.1 Affected: 4.1.2 Affected: 4.1.3 Affected: 4.1.4 Affected: 4.2.0 Affected: 4.2.1 Affected: 4.1.5 Affected: 4.2.2 Affected: 4.2.X Affected: 4.2.3 Affected: 4.2.4 Affected: 4.2.6 Affected: 4.1.6 Affected: 4.3.0 Affected: 4.3.1 Affected: 4.3.2 Affected: 4.3.3 Affected: 4.4.0 Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.1.7 Affected: 5.0.0 Affected: 5.0.1 Affected: 5.0.2 Affected: 5.1.0 Affected: 5.1.1 Affected: 5.1.2 Affected: 5.1.3 Affected: 5.2.0 Affected: 5.2.1 Affected: 5.3.0 Affected: 5.3.1 Affected: 5.3.2 Affected: 5.3.3 Affected: 5.5.1 Affected: 5.6.1 Affected: 5.4.0 Affected: 5.4.1 Affected: 5.4.2 Affected: 5.7.0 Affected: 5.8.1 Affected: 5.7.1 Affected: 5.8.0 Affected: 5.5.2 |
|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Cyber Vision",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.3"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.0.6"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.2.4"
},
{
"status": "affected",
"version": "4.0.0"
},
{
"status": "affected",
"version": "4.0.1"
},
{
"status": "affected",
"version": "4.0.2"
},
{
"status": "affected",
"version": "4.0.3"
},
{
"status": "affected",
"version": "4.1.0"
},
{
"status": "affected",
"version": "4.1.1"
},
{
"status": "affected",
"version": "4.1.2"
},
{
"status": "affected",
"version": "4.1.3"
},
{
"status": "affected",
"version": "4.1.4"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.2.1"
},
{
"status": "affected",
"version": "4.1.5"
},
{
"status": "affected",
"version": "4.2.2"
},
{
"status": "affected",
"version": "4.2.X"
},
{
"status": "affected",
"version": "4.2.3"
},
{
"status": "affected",
"version": "4.2.4"
},
{
"status": "affected",
"version": "4.2.6"
},
{
"status": "affected",
"version": "4.1.6"
},
{
"status": "affected",
"version": "4.3.0"
},
{
"status": "affected",
"version": "4.3.1"
},
{
"status": "affected",
"version": "4.3.2"
},
{
"status": "affected",
"version": "4.3.3"
},
{
"status": "affected",
"version": "4.4.0"
},
{
"status": "affected",
"version": "4.4.1"
},
{
"status": "affected",
"version": "4.4.2"
},
{
"status": "affected",
"version": "4.4.3"
},
{
"status": "affected",
"version": "4.1.7"
},
{
"status": "affected",
"version": "5.0.0"
},
{
"status": "affected",
"version": "5.0.1"
},
{
"status": "affected",
"version": "5.0.2"
},
{
"status": "affected",
"version": "5.1.0"
},
{
"status": "affected",
"version": "5.1.1"
},
{
"status": "affected",
"version": "5.1.2"
},
{
"status": "affected",
"version": "5.1.3"
},
{
"status": "affected",
"version": "5.2.0"
},
{
"status": "affected",
"version": "5.2.1"
},
{
"status": "affected",
"version": "5.3.0"
},
{
"status": "affected",
"version": "5.3.1"
},
{
"status": "affected",
"version": "5.3.2"
},
{
"status": "affected",
"version": "5.3.3"
},
{
"status": "affected",
"version": "5.5.1"
},
{
"status": "affected",
"version": "5.6.1"
},
{
"status": "affected",
"version": "5.4.0"
},
{
"status": "affected",
"version": "5.4.1"
},
{
"status": "affected",
"version": "5.4.2"
},
{
"status": "affected",
"version": "5.7.0"
},
{
"status": "affected",
"version": "5.8.1"
},
{
"status": "affected",
"version": "5.7.1"
},
{
"status": "affected",
"version": "5.8.0"
},
{
"status": "affected",
"version": "5.5.2"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20356 are related to issues concerning uncontrolled resource consumption that are grouped under the Common Weakness Enumeration (CWE) Base CWE-400."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "Uncontrolled Resource Consumption",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:13:06.738Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-hardening-snort3-ybgmhTQe",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-snort3-ybgmhTQe"
}
],
"source": {
"advisory": "cisco-sa-hardening-snort3-ybgmhTQe",
"defects": [
"CSCwu24015"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Software Hardening Release: October 2026"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20356",
"datePublished": "2026-10-21T16:13:06.738Z",
"dateReserved": "2025-10-08T11:59:15.414Z",
"dateUpdated": "2026-10-21T16:13:06.738Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20291 (GCVE-0-2026-20291)
Vulnerability from nvd – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20291 are related to issues concerning improper privilege management that are grouped under the Common Weakness Enumeration (CWE) Base CWE-269.
Severity
7.8 (High)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Affected:
3.0.0
Affected: 3.0.2 Affected: 3.0.3 Affected: 3.0.1 Affected: 3.1.0 Affected: 3.0.4 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.2.0 Affected: 3.0.5 Affected: 3.2.1 Affected: 3.0.6 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.2.4 Affected: 4.0.0 Affected: 4.0.1 Affected: 4.0.2 Affected: 4.0.3 Affected: 4.1.0 Affected: 4.1.1 Affected: 4.1.2 Affected: 4.1.3 Affected: 4.1.4 Affected: 4.2.0 Affected: 4.2.1 Affected: 4.1.5 Affected: 4.2.2 Affected: 4.2.X Affected: 4.2.3 Affected: 4.2.4 Affected: 4.2.6 Affected: 4.1.6 Affected: 4.3.0 Affected: 4.3.1 Affected: 4.3.2 Affected: 4.3.3 Affected: 4.4.0 Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.1.7 Affected: 5.0.0 Affected: 5.0.1 Affected: 5.0.2 Affected: 5.1.0 Affected: 5.1.1 Affected: 5.1.2 Affected: 5.1.3 Affected: 5.2.0 Affected: 5.2.1 Affected: 5.3.0 Affected: 5.3.1 Affected: 5.3.2 Affected: 5.3.3 Affected: 5.5.1 Affected: 5.6.1 Affected: 5.4.0 Affected: 5.4.1 Affected: 5.4.2 Affected: 5.7.0 Affected: 5.8.1 Affected: 5.7.1 Affected: 5.8.0 Affected: 5.5.2 |
|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Cyber Vision",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.3"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.0.6"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.2.4"
},
{
"status": "affected",
"version": "4.0.0"
},
{
"status": "affected",
"version": "4.0.1"
},
{
"status": "affected",
"version": "4.0.2"
},
{
"status": "affected",
"version": "4.0.3"
},
{
"status": "affected",
"version": "4.1.0"
},
{
"status": "affected",
"version": "4.1.1"
},
{
"status": "affected",
"version": "4.1.2"
},
{
"status": "affected",
"version": "4.1.3"
},
{
"status": "affected",
"version": "4.1.4"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.2.1"
},
{
"status": "affected",
"version": "4.1.5"
},
{
"status": "affected",
"version": "4.2.2"
},
{
"status": "affected",
"version": "4.2.X"
},
{
"status": "affected",
"version": "4.2.3"
},
{
"status": "affected",
"version": "4.2.4"
},
{
"status": "affected",
"version": "4.2.6"
},
{
"status": "affected",
"version": "4.1.6"
},
{
"status": "affected",
"version": "4.3.0"
},
{
"status": "affected",
"version": "4.3.1"
},
{
"status": "affected",
"version": "4.3.2"
},
{
"status": "affected",
"version": "4.3.3"
},
{
"status": "affected",
"version": "4.4.0"
},
{
"status": "affected",
"version": "4.4.1"
},
{
"status": "affected",
"version": "4.4.2"
},
{
"status": "affected",
"version": "4.4.3"
},
{
"status": "affected",
"version": "4.1.7"
},
{
"status": "affected",
"version": "5.0.0"
},
{
"status": "affected",
"version": "5.0.1"
},
{
"status": "affected",
"version": "5.0.2"
},
{
"status": "affected",
"version": "5.1.0"
},
{
"status": "affected",
"version": "5.1.1"
},
{
"status": "affected",
"version": "5.1.2"
},
{
"status": "affected",
"version": "5.1.3"
},
{
"status": "affected",
"version": "5.2.0"
},
{
"status": "affected",
"version": "5.2.1"
},
{
"status": "affected",
"version": "5.3.0"
},
{
"status": "affected",
"version": "5.3.1"
},
{
"status": "affected",
"version": "5.3.2"
},
{
"status": "affected",
"version": "5.3.3"
},
{
"status": "affected",
"version": "5.5.1"
},
{
"status": "affected",
"version": "5.6.1"
},
{
"status": "affected",
"version": "5.4.0"
},
{
"status": "affected",
"version": "5.4.1"
},
{
"status": "affected",
"version": "5.4.2"
},
{
"status": "affected",
"version": "5.7.0"
},
{
"status": "affected",
"version": "5.8.1"
},
{
"status": "affected",
"version": "5.7.1"
},
{
"status": "affected",
"version": "5.8.0"
},
{
"status": "affected",
"version": "5.5.2"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20291 are related to issues concerning improper privilege management that are grouped under the Common Weakness Enumeration (CWE) Base CWE-269."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-269",
"description": "Improper Privilege Management",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:53.383Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-hardening-snort3-ybgmhTQe",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-snort3-ybgmhTQe"
}
],
"source": {
"advisory": "cisco-sa-hardening-snort3-ybgmhTQe",
"defects": [
"CSCwu22792"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Software Hardening Release: October 2026"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20291",
"datePublished": "2026-10-21T16:12:53.383Z",
"dateReserved": "2025-10-08T11:59:15.405Z",
"dateUpdated": "2026-10-21T16:12:53.383Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20236 (GCVE-0-2026-20236)
Vulnerability from nvd – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20236 are related to issues concerning incorrect calculation that are grouped under the Common Weakness Enumeration (CWE) Base CWE-682.
Severity
7.5 (High)
CWE
- CWE-682 - Incorrect Calculation
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Affected:
3.0.0
Affected: 3.0.2 Affected: 3.0.3 Affected: 3.0.1 Affected: 3.1.0 Affected: 3.0.4 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.2.0 Affected: 3.0.5 Affected: 3.2.1 Affected: 3.0.6 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.2.4 Affected: 4.0.0 Affected: 4.0.1 Affected: 4.0.2 Affected: 4.0.3 Affected: 4.1.0 Affected: 4.1.1 Affected: 4.1.2 Affected: 4.1.3 Affected: 4.1.4 Affected: 4.2.0 Affected: 4.2.1 Affected: 4.1.5 Affected: 4.2.2 Affected: 4.2.X Affected: 4.2.3 Affected: 4.2.4 Affected: 4.2.6 Affected: 4.1.6 Affected: 4.3.0 Affected: 4.3.1 Affected: 4.3.2 Affected: 4.3.3 Affected: 4.4.0 Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.1.7 Affected: 5.0.0 Affected: 5.0.1 Affected: 5.0.2 Affected: 5.1.0 Affected: 5.1.1 Affected: 5.1.2 Affected: 5.1.3 Affected: 5.2.0 Affected: 5.2.1 Affected: 5.3.0 Affected: 5.3.1 Affected: 5.3.2 Affected: 5.3.3 Affected: 5.5.1 Affected: 5.6.1 Affected: 5.4.0 Affected: 5.4.1 Affected: 5.4.2 Affected: 5.7.0 Affected: 5.8.1 Affected: 5.7.1 Affected: 5.8.0 Affected: 5.5.2 |
|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Cyber Vision",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.3"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.0.6"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.2.4"
},
{
"status": "affected",
"version": "4.0.0"
},
{
"status": "affected",
"version": "4.0.1"
},
{
"status": "affected",
"version": "4.0.2"
},
{
"status": "affected",
"version": "4.0.3"
},
{
"status": "affected",
"version": "4.1.0"
},
{
"status": "affected",
"version": "4.1.1"
},
{
"status": "affected",
"version": "4.1.2"
},
{
"status": "affected",
"version": "4.1.3"
},
{
"status": "affected",
"version": "4.1.4"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.2.1"
},
{
"status": "affected",
"version": "4.1.5"
},
{
"status": "affected",
"version": "4.2.2"
},
{
"status": "affected",
"version": "4.2.X"
},
{
"status": "affected",
"version": "4.2.3"
},
{
"status": "affected",
"version": "4.2.4"
},
{
"status": "affected",
"version": "4.2.6"
},
{
"status": "affected",
"version": "4.1.6"
},
{
"status": "affected",
"version": "4.3.0"
},
{
"status": "affected",
"version": "4.3.1"
},
{
"status": "affected",
"version": "4.3.2"
},
{
"status": "affected",
"version": "4.3.3"
},
{
"status": "affected",
"version": "4.4.0"
},
{
"status": "affected",
"version": "4.4.1"
},
{
"status": "affected",
"version": "4.4.2"
},
{
"status": "affected",
"version": "4.4.3"
},
{
"status": "affected",
"version": "4.1.7"
},
{
"status": "affected",
"version": "5.0.0"
},
{
"status": "affected",
"version": "5.0.1"
},
{
"status": "affected",
"version": "5.0.2"
},
{
"status": "affected",
"version": "5.1.0"
},
{
"status": "affected",
"version": "5.1.1"
},
{
"status": "affected",
"version": "5.1.2"
},
{
"status": "affected",
"version": "5.1.3"
},
{
"status": "affected",
"version": "5.2.0"
},
{
"status": "affected",
"version": "5.2.1"
},
{
"status": "affected",
"version": "5.3.0"
},
{
"status": "affected",
"version": "5.3.1"
},
{
"status": "affected",
"version": "5.3.2"
},
{
"status": "affected",
"version": "5.3.3"
},
{
"status": "affected",
"version": "5.5.1"
},
{
"status": "affected",
"version": "5.6.1"
},
{
"status": "affected",
"version": "5.4.0"
},
{
"status": "affected",
"version": "5.4.1"
},
{
"status": "affected",
"version": "5.4.2"
},
{
"status": "affected",
"version": "5.7.0"
},
{
"status": "affected",
"version": "5.8.1"
},
{
"status": "affected",
"version": "5.7.1"
},
{
"status": "affected",
"version": "5.8.0"
},
{
"status": "affected",
"version": "5.5.2"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20236 are related to issues concerning incorrect calculation that are grouped under the Common Weakness Enumeration (CWE) Base CWE-682."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-682",
"description": "Incorrect Calculation",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:58.186Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-hardening-snort3-ybgmhTQe",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-snort3-ybgmhTQe"
}
],
"source": {
"advisory": "cisco-sa-hardening-snort3-ybgmhTQe",
"defects": [
"CSCwu17795"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Software Hardening Release: October 2026"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20236",
"datePublished": "2026-10-21T16:12:58.186Z",
"dateReserved": "2025-10-08T11:59:15.400Z",
"dateUpdated": "2026-10-21T16:12:58.186Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20221 (GCVE-0-2026-20221)
Vulnerability from nvd – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities
Summary
Multiple Cisco products are affected by a vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause an unexpected restart of the Snort 3 Detection Engine.
This vulnerability is due to improper handling of nested GRE traffic. An attacker could exploit this vulnerability by sending a crafted GRE payload through an affected device. A successful exploit could allow the attacker to trigger an unexpected reload of the Snort 3 Detection Engine, resulting in either a bypass or denial of service (DoS) condition, depending on device configuration. For more information, see the section of this advisory. The Snort 3 Detection Engine will restart automatically. No manual intervention is required.
Severity
5.8 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Affected:
3.0.0
Affected: 3.0.2 Affected: 3.0.3 Affected: 3.0.1 Affected: 3.1.0 Affected: 3.0.4 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.2.0 Affected: 3.0.5 Affected: 3.2.1 Affected: 3.0.6 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.2.4 Affected: 4.0.0 Affected: 4.0.1 Affected: 4.0.2 Affected: 4.0.3 Affected: 4.1.0 Affected: 4.1.1 Affected: 4.1.2 Affected: 4.1.3 Affected: 4.1.4 Affected: 4.2.0 Affected: 4.2.1 Affected: 4.1.5 Affected: 4.2.2 Affected: 4.2.X Affected: 4.2.3 Affected: 4.2.4 Affected: 4.2.6 Affected: 4.1.6 Affected: 4.3.0 Affected: 4.3.1 Affected: 4.3.2 Affected: 4.3.3 Affected: 4.4.0 Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.1.7 Affected: 5.0.0 Affected: 5.0.1 Affected: 5.0.2 Affected: 5.1.0 Affected: 5.1.1 Affected: 5.1.2 Affected: 5.1.3 Affected: 5.2.0 Affected: 5.2.1 Affected: 5.3.0 Affected: 5.3.1 Affected: 5.3.2 Affected: 5.3.3 Affected: 5.5.1 Affected: 5.6.1 Affected: 5.6.0 Affected: 5.4.0 Affected: 5.4.1 Affected: 5.4.2 |
|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco Umbrella Insights Virtual Appliance |
Affected:
2.6.0
Affected: 2.5.6 Affected: 2.5 Affected: 2.4.12 Affected: 2.7 Affected: 2.6.2 Affected: 2.5.5 Affected: 2.5.4 Affected: 2.8 Affected: 2.6.1 Affected: 2.5.7 Affected: 1.5.4 Affected: 1.5.5 Affected: 1.5.6 Affected: 2.0.0 Affected: 2.0.2 Affected: 2.0.3 Affected: 2.1.0 Affected: 2.1.2 Affected: 2.1.4 Affected: 2.1.5 Affected: 2.2 Affected: 2.2.1 Affected: 2.3 Affected: 2.3.1 Affected: 2.4 Affected: 2.4.4 Affected: 2.4.6 Affected: 2.8.9 Affected: 3.0 Affected: 3.1 Affected: 3.2 Affected: 2.8.1 Affected: 2.8.2 Affected: 2.8.3 Affected: 2.8.4 Affected: 2.8.5 Affected: 3.0.1 Affected: 3.0.2 Affected: 3.0.4 Affected: 3.0.5 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.1.3 Affected: 3.1.4 Affected: 3.2.1 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.3 Affected: 3.3.1 Affected: 3.3.2 Affected: 3.3.3 Affected: 3.3.4 Affected: 3.4 Affected: 3.4.1 Affected: 3.4.2 Affected: 3.4.3 Affected: 3.4.4 Affected: 3.4.5 Affected: 3.4.6 Affected: 3.5 Affected: 2.7.1 Affected: 2.7.2 Affected: 2.7.6 Affected: 2.7.9 Affected: 2.7.10 Affected: 3.5.1 Affected: 3.5.2 Affected: 3.6.1 Affected: 3.6.2 Affected: 3.7 Affected: 3.7.1 Affected: 3.8.3 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
3.17.1S
Affected: 16.12.3 Affected: Fuji-16.9.5 Affected: 16.12.4 Affected: 17.3.1a Affected: 16.6.6 Affected: 16.12.2 Affected: Fuji-16.9.6 Affected: 3.17.0S Affected: Fuji-16.9.3 Affected: Denali-16.3.7 Affected: Fuji-16.9.2 Affected: Fuji-16.9.4 Affected: Everest-16.6.4 Affected: Everest-16.6.3 Affected: 16.6.5 Affected: Denali-16.3.5 Affected: 17.2.1r Affected: 17.1.1 Affected: Everest-16.6.2 Affected: 16.6.7a Affected: Denali-16.3.4 Affected: 16.6.1 Affected: Denali-16.3.9 Affected: Denali-16.3.3 Affected: 16.12.1a Affected: 17.3.2 Affected: 17.4.1a Affected: 16.12.5 Affected: 17.5.1 Affected: Fuji-16.9.7 Affected: 16.6.9 Affected: 17.3.3 Affected: 17.5.1a Affected: 17.3.4 Affected: 17.3.4a Affected: 17.4.2 Affected: 17.4.1b Affected: 17.6.1a Affected: 16.6.10 Affected: 17.7.1a Affected: 16.12.6 Affected: Fuji-16.9.8 Affected: 17.6.2 Affected: 17.8.1a Affected: 16.12.7 Affected: 17.3.5 Affected: 17.6.3 Affected: 17.6.3a Affected: 17.7.2 Affected: 17.9.1a Affected: 17.6.4 Affected: 17.10.1a Affected: 17.3.6 Affected: 16.12.8 Affected: 17.3.7 Affected: 17.9.2a Affected: 17.6.5 Affected: 17.11.1a Affected: 17.9.3a Affected: 17.12.1a Affected: 17.9.4 Affected: 17.6.6 Affected: 17.3.8 Affected: 17.3.8a Affected: 17.6.6a Affected: 17.9.4a Affected: 17.12.2 Affected: 17.13.1a Affected: 17.9.5a Affected: 17.12.3 Affected: 17.6.7 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.6.8 Affected: 17.9.6 Affected: 17.6.8a Affected: 17.16.1a Affected: 17.9.5e Affected: 17.12.4a Affected: 17.15.2c Affected: 17.9.5f Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.9.7a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.9.7b Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.9.8 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.9.9 Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 Affected: 17.9.10 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Cyber Vision",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.3"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.0.6"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.2.4"
},
{
"status": "affected",
"version": "4.0.0"
},
{
"status": "affected",
"version": "4.0.1"
},
{
"status": "affected",
"version": "4.0.2"
},
{
"status": "affected",
"version": "4.0.3"
},
{
"status": "affected",
"version": "4.1.0"
},
{
"status": "affected",
"version": "4.1.1"
},
{
"status": "affected",
"version": "4.1.2"
},
{
"status": "affected",
"version": "4.1.3"
},
{
"status": "affected",
"version": "4.1.4"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.2.1"
},
{
"status": "affected",
"version": "4.1.5"
},
{
"status": "affected",
"version": "4.2.2"
},
{
"status": "affected",
"version": "4.2.X"
},
{
"status": "affected",
"version": "4.2.3"
},
{
"status": "affected",
"version": "4.2.4"
},
{
"status": "affected",
"version": "4.2.6"
},
{
"status": "affected",
"version": "4.1.6"
},
{
"status": "affected",
"version": "4.3.0"
},
{
"status": "affected",
"version": "4.3.1"
},
{
"status": "affected",
"version": "4.3.2"
},
{
"status": "affected",
"version": "4.3.3"
},
{
"status": "affected",
"version": "4.4.0"
},
{
"status": "affected",
"version": "4.4.1"
},
{
"status": "affected",
"version": "4.4.2"
},
{
"status": "affected",
"version": "4.4.3"
},
{
"status": "affected",
"version": "4.1.7"
},
{
"status": "affected",
"version": "5.0.0"
},
{
"status": "affected",
"version": "5.0.1"
},
{
"status": "affected",
"version": "5.0.2"
},
{
"status": "affected",
"version": "5.1.0"
},
{
"status": "affected",
"version": "5.1.1"
},
{
"status": "affected",
"version": "5.1.2"
},
{
"status": "affected",
"version": "5.1.3"
},
{
"status": "affected",
"version": "5.2.0"
},
{
"status": "affected",
"version": "5.2.1"
},
{
"status": "affected",
"version": "5.3.0"
},
{
"status": "affected",
"version": "5.3.1"
},
{
"status": "affected",
"version": "5.3.2"
},
{
"status": "affected",
"version": "5.3.3"
},
{
"status": "affected",
"version": "5.5.1"
},
{
"status": "affected",
"version": "5.6.1"
},
{
"status": "affected",
"version": "5.6.0"
},
{
"status": "affected",
"version": "5.4.0"
},
{
"status": "affected",
"version": "5.4.1"
},
{
"status": "affected",
"version": "5.4.2"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Umbrella Insights Virtual Appliance",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "2.6.0"
},
{
"status": "affected",
"version": "2.5.6"
},
{
"status": "affected",
"version": "2.5"
},
{
"status": "affected",
"version": "2.4.12"
},
{
"status": "affected",
"version": "2.7"
},
{
"status": "affected",
"version": "2.6.2"
},
{
"status": "affected",
"version": "2.5.5"
},
{
"status": "affected",
"version": "2.5.4"
},
{
"status": "affected",
"version": "2.8"
},
{
"status": "affected",
"version": "2.6.1"
},
{
"status": "affected",
"version": "2.5.7"
},
{
"status": "affected",
"version": "1.5.4"
},
{
"status": "affected",
"version": "1.5.5"
},
{
"status": "affected",
"version": "1.5.6"
},
{
"status": "affected",
"version": "2.0.0"
},
{
"status": "affected",
"version": "2.0.2"
},
{
"status": "affected",
"version": "2.0.3"
},
{
"status": "affected",
"version": "2.1.0"
},
{
"status": "affected",
"version": "2.1.2"
},
{
"status": "affected",
"version": "2.1.4"
},
{
"status": "affected",
"version": "2.1.5"
},
{
"status": "affected",
"version": "2.2"
},
{
"status": "affected",
"version": "2.2.1"
},
{
"status": "affected",
"version": "2.3"
},
{
"status": "affected",
"version": "2.3.1"
},
{
"status": "affected",
"version": "2.4"
},
{
"status": "affected",
"version": "2.4.4"
},
{
"status": "affected",
"version": "2.4.6"
},
{
"status": "affected",
"version": "2.8.9"
},
{
"status": "affected",
"version": "3.0"
},
{
"status": "affected",
"version": "3.1"
},
{
"status": "affected",
"version": "3.2"
},
{
"status": "affected",
"version": "2.8.1"
},
{
"status": "affected",
"version": "2.8.2"
},
{
"status": "affected",
"version": "2.8.3"
},
{
"status": "affected",
"version": "2.8.4"
},
{
"status": "affected",
"version": "2.8.5"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.1.3"
},
{
"status": "affected",
"version": "3.1.4"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.3"
},
{
"status": "affected",
"version": "3.3.1"
},
{
"status": "affected",
"version": "3.3.2"
},
{
"status": "affected",
"version": "3.3.3"
},
{
"status": "affected",
"version": "3.3.4"
},
{
"status": "affected",
"version": "3.4"
},
{
"status": "affected",
"version": "3.4.1"
},
{
"status": "affected",
"version": "3.4.2"
},
{
"status": "affected",
"version": "3.4.3"
},
{
"status": "affected",
"version": "3.4.4"
},
{
"status": "affected",
"version": "3.4.5"
},
{
"status": "affected",
"version": "3.4.6"
},
{
"status": "affected",
"version": "3.5"
},
{
"status": "affected",
"version": "2.7.1"
},
{
"status": "affected",
"version": "2.7.2"
},
{
"status": "affected",
"version": "2.7.6"
},
{
"status": "affected",
"version": "2.7.9"
},
{
"status": "affected",
"version": "2.7.10"
},
{
"status": "affected",
"version": "3.5.1"
},
{
"status": "affected",
"version": "3.5.2"
},
{
"status": "affected",
"version": "3.6.1"
},
{
"status": "affected",
"version": "3.6.2"
},
{
"status": "affected",
"version": "3.7"
},
{
"status": "affected",
"version": "3.7.1"
},
{
"status": "affected",
"version": "3.8.3"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.17.1S"
},
{
"status": "affected",
"version": "16.12.3"
},
{
"status": "affected",
"version": "Fuji-16.9.5"
},
{
"status": "affected",
"version": "16.12.4"
},
{
"status": "affected",
"version": "17.3.1a"
},
{
"status": "affected",
"version": "16.6.6"
},
{
"status": "affected",
"version": "16.12.2"
},
{
"status": "affected",
"version": "Fuji-16.9.6"
},
{
"status": "affected",
"version": "3.17.0S"
},
{
"status": "affected",
"version": "Fuji-16.9.3"
},
{
"status": "affected",
"version": "Denali-16.3.7"
},
{
"status": "affected",
"version": "Fuji-16.9.2"
},
{
"status": "affected",
"version": "Fuji-16.9.4"
},
{
"status": "affected",
"version": "Everest-16.6.4"
},
{
"status": "affected",
"version": "Everest-16.6.3"
},
{
"status": "affected",
"version": "16.6.5"
},
{
"status": "affected",
"version": "Denali-16.3.5"
},
{
"status": "affected",
"version": "17.2.1r"
},
{
"status": "affected",
"version": "17.1.1"
},
{
"status": "affected",
"version": "Everest-16.6.2"
},
{
"status": "affected",
"version": "16.6.7a"
},
{
"status": "affected",
"version": "Denali-16.3.4"
},
{
"status": "affected",
"version": "16.6.1"
},
{
"status": "affected",
"version": "Denali-16.3.9"
},
{
"status": "affected",
"version": "Denali-16.3.3"
},
{
"status": "affected",
"version": "16.12.1a"
},
{
"status": "affected",
"version": "17.3.2"
},
{
"status": "affected",
"version": "17.4.1a"
},
{
"status": "affected",
"version": "16.12.5"
},
{
"status": "affected",
"version": "17.5.1"
},
{
"status": "affected",
"version": "Fuji-16.9.7"
},
{
"status": "affected",
"version": "16.6.9"
},
{
"status": "affected",
"version": "17.3.3"
},
{
"status": "affected",
"version": "17.5.1a"
},
{
"status": "affected",
"version": "17.3.4"
},
{
"status": "affected",
"version": "17.3.4a"
},
{
"status": "affected",
"version": "17.4.2"
},
{
"status": "affected",
"version": "17.4.1b"
},
{
"status": "affected",
"version": "17.6.1a"
},
{
"status": "affected",
"version": "16.6.10"
},
{
"status": "affected",
"version": "17.7.1a"
},
{
"status": "affected",
"version": "16.12.6"
},
{
"status": "affected",
"version": "Fuji-16.9.8"
},
{
"status": "affected",
"version": "17.6.2"
},
{
"status": "affected",
"version": "17.8.1a"
},
{
"status": "affected",
"version": "16.12.7"
},
{
"status": "affected",
"version": "17.3.5"
},
{
"status": "affected",
"version": "17.6.3"
},
{
"status": "affected",
"version": "17.6.3a"
},
{
"status": "affected",
"version": "17.7.2"
},
{
"status": "affected",
"version": "17.9.1a"
},
{
"status": "affected",
"version": "17.6.4"
},
{
"status": "affected",
"version": "17.10.1a"
},
{
"status": "affected",
"version": "17.3.6"
},
{
"status": "affected",
"version": "16.12.8"
},
{
"status": "affected",
"version": "17.3.7"
},
{
"status": "affected",
"version": "17.9.2a"
},
{
"status": "affected",
"version": "17.6.5"
},
{
"status": "affected",
"version": "17.11.1a"
},
{
"status": "affected",
"version": "17.9.3a"
},
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.9.4"
},
{
"status": "affected",
"version": "17.6.6"
},
{
"status": "affected",
"version": "17.3.8"
},
{
"status": "affected",
"version": "17.3.8a"
},
{
"status": "affected",
"version": "17.6.6a"
},
{
"status": "affected",
"version": "17.9.4a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.9.5a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.6.7"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.6.8"
},
{
"status": "affected",
"version": "17.9.6"
},
{
"status": "affected",
"version": "17.6.8a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.9.5e"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.9.5f"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.9.7a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.9.7b"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.9.8"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.9.9"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
},
{
"status": "affected",
"version": "17.9.10"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause an unexpected restart of the Snort 3 Detection Engine.\r\n\r\nThis vulnerability is due to improper handling of nested GRE traffic. An attacker could exploit this vulnerability by sending a crafted GRE payload through an affected device. A successful exploit could allow the attacker to trigger an unexpected reload of the Snort 3 Detection Engine, resulting in either a bypass or denial of service (DoS) condition, depending on device configuration. For more information, see the section of this advisory. The Snort 3 Detection Engine will restart automatically. No manual intervention is required."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "NULL Pointer Dereference",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:53.435Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-gre-JNpMHrTv",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-gre-JNpMHrTv"
}
],
"source": {
"advisory": "cisco-sa-snort3-gre-JNpMHrTv",
"defects": [
"CSCwt66239"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20221",
"datePublished": "2026-10-21T16:12:53.435Z",
"dateReserved": "2025-10-08T11:59:15.398Z",
"dateUpdated": "2026-10-21T16:12:53.435Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20218 (GCVE-0-2026-20218)
Vulnerability from nvd – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Cisco Secure Firewall Threat Defense Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability
Summary
A vulnerability in the Snort 3 Visual Basic for Applications (VBA) Decompression Engine of multiple Cisco products could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a denial of service (DoS) condition.
This vulnerability is due to improper range checking when Snort 3 decompresses VBA data, which is user controlled. An attacker could exploit this vulnerability by sending crafted VBA data to the Snort 3 Detection Engine of a targeted device. A successful exploit could allow the attacker to cause an overflow of stack data, which could result in a DoS condition.
Severity
5.8 (Medium)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.2.0
Affected: 7.2.0.1 Affected: 7.2.1 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the Snort 3 Visual Basic for Applications (VBA) Decompression Engine of multiple Cisco products could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to improper range checking when Snort 3 decompresses VBA data, which is user controlled. An attacker could exploit this vulnerability by sending crafted VBA data to the Snort 3 Detection Engine of a targeted device. A successful exploit could allow the attacker to cause an overflow of stack data, which could result in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-121",
"description": "Stack-based Buffer Overflow",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:38.494Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-vba-bufdos-jAuFdvn9",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-vba-bufdos-jAuFdvn9"
}
],
"source": {
"advisory": "cisco-sa-snort3-vba-bufdos-jAuFdvn9",
"defects": [
"CSCwv01924"
],
"discovery": "EXTERNAL"
},
"title": "Cisco Secure Firewall Threat Defense Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20218",
"datePublished": "2026-10-21T16:12:38.494Z",
"dateReserved": "2025-10-08T11:59:15.398Z",
"dateUpdated": "2026-10-21T16:12:38.494Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20197 (GCVE-0-2026-20197)
Vulnerability from nvd – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Teredo Protocol Denial of Service Vulnerability
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 Teredo Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to incomplete error checking when Snort 3 parses Teredo packets. An attacker could exploit this vulnerability by sending a crafted Teredo packet to a targeted device to be parsed by Snort. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition.
Severity
5.8 (Medium)
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the Snort 3 Teredo Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r\nThis vulnerability is due to incomplete error checking when Snort 3 parses Teredo packets. An attacker could exploit this vulnerability by sending a crafted Teredo packet to a targeted device to be parsed by Snort. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-119",
"description": "Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:40.477Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-misc-dos-6mB22qAK",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK"
}
],
"source": {
"advisory": "cisco-sa-snort3-misc-dos-6mB22qAK",
"defects": [
"CSCwu51451"
],
"discovery": "EXTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Teredo Protocol Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20197",
"datePublished": "2026-10-21T16:12:40.477Z",
"dateReserved": "2025-10-08T11:59:15.396Z",
"dateUpdated": "2026-10-21T16:12:40.477Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20179 (GCVE-0-2026-20179)
Vulnerability from nvd – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 Generic Routing Encapsulation (GRE) Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to incomplete error checking when Snort 3 parses GRE packets. An attacker could exploit this vulnerability by sending a crafted GRE packet to a targeted device to be parsed by Snort. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition.
Severity
5.8 (Medium)
CWE
- CWE-128 - Wrap-around Error
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the Snort 3 Generic Routing Encapsulation (GRE) Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r\nThis vulnerability is due to incomplete error checking when Snort 3 parses GRE packets. An attacker could exploit this vulnerability by sending a crafted GRE packet to a targeted device to be parsed by Snort. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-128",
"description": "Wrap-around Error",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:29.897Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-misc-dos-6mB22qAK",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK"
}
],
"source": {
"advisory": "cisco-sa-snort3-misc-dos-6mB22qAK",
"defects": [
"CSCwu51449"
],
"discovery": "EXTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20179",
"datePublished": "2026-10-21T16:12:29.897Z",
"dateReserved": "2025-10-08T11:59:15.393Z",
"dateUpdated": "2026-10-21T16:12:29.897Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20043 (GCVE-0-2026-20043)
Vulnerability from nvd – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20043 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.
Severity
9 (Critical)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Affected:
3.0.0
Affected: 3.0.2 Affected: 3.0.3 Affected: 3.0.1 Affected: 3.1.0 Affected: 3.0.4 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.2.0 Affected: 3.0.5 Affected: 3.2.1 Affected: 3.0.6 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.2.4 Affected: 4.0.0 Affected: 4.0.1 Affected: 4.0.2 Affected: 4.0.3 Affected: 4.1.0 Affected: 4.1.1 Affected: 4.1.2 Affected: 4.1.3 Affected: 4.1.4 Affected: 4.2.0 Affected: 4.2.1 Affected: 4.1.5 Affected: 4.2.2 Affected: 4.2.X Affected: 4.2.3 Affected: 4.2.4 Affected: 4.2.6 Affected: 4.1.6 Affected: 4.3.0 Affected: 4.3.1 Affected: 4.3.2 Affected: 4.3.3 Affected: 4.4.0 Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.1.7 Affected: 5.0.0 Affected: 5.0.1 Affected: 5.0.2 Affected: 5.1.0 Affected: 5.1.1 Affected: 5.1.2 Affected: 5.1.3 Affected: 5.2.0 Affected: 5.2.1 Affected: 5.3.0 Affected: 5.3.1 Affected: 5.3.2 Affected: 5.3.3 Affected: 5.5.1 Affected: 5.6.1 Affected: 5.4.0 Affected: 5.4.1 Affected: 5.4.2 Affected: 5.7.0 Affected: 5.8.1 Affected: 5.7.1 Affected: 5.8.0 Affected: 5.5.2 |
|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.3.1a
Affected: 17.3.2 Affected: 17.4.1a Affected: 17.5.1 Affected: 17.3.3 Affected: 17.5.1a Affected: 17.3.4 Affected: 17.3.4a Affected: 17.4.2 Affected: 17.4.1b Affected: 17.6.1a Affected: 17.7.1a Affected: 17.6.2 Affected: 17.8.1a Affected: 17.3.5 Affected: 17.6.3 Affected: 17.6.3a Affected: 17.7.2 Affected: 17.9.1a Affected: 17.6.4 Affected: 17.10.1a Affected: 17.3.6 Affected: 17.3.7 Affected: 17.9.2a Affected: 17.6.5 Affected: 17.11.1a Affected: 17.9.3a Affected: 17.12.1a Affected: 17.9.4 Affected: 17.6.6 Affected: 17.3.8 Affected: 17.3.8a Affected: 17.6.6a Affected: 17.9.4a Affected: 17.12.2 Affected: 17.13.1a Affected: 17.9.5a Affected: 17.12.3 Affected: 17.6.7 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.6.8 Affected: 17.9.6 Affected: 17.6.8a Affected: 17.16.1a Affected: 17.9.5e Affected: 17.12.4a Affected: 17.15.2c Affected: 17.9.5f Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.9.7a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.9.7b Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.9.8 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.9.9 Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 Affected: 17.9.10 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Cyber Vision",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.3"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.0.6"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.2.4"
},
{
"status": "affected",
"version": "4.0.0"
},
{
"status": "affected",
"version": "4.0.1"
},
{
"status": "affected",
"version": "4.0.2"
},
{
"status": "affected",
"version": "4.0.3"
},
{
"status": "affected",
"version": "4.1.0"
},
{
"status": "affected",
"version": "4.1.1"
},
{
"status": "affected",
"version": "4.1.2"
},
{
"status": "affected",
"version": "4.1.3"
},
{
"status": "affected",
"version": "4.1.4"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.2.1"
},
{
"status": "affected",
"version": "4.1.5"
},
{
"status": "affected",
"version": "4.2.2"
},
{
"status": "affected",
"version": "4.2.X"
},
{
"status": "affected",
"version": "4.2.3"
},
{
"status": "affected",
"version": "4.2.4"
},
{
"status": "affected",
"version": "4.2.6"
},
{
"status": "affected",
"version": "4.1.6"
},
{
"status": "affected",
"version": "4.3.0"
},
{
"status": "affected",
"version": "4.3.1"
},
{
"status": "affected",
"version": "4.3.2"
},
{
"status": "affected",
"version": "4.3.3"
},
{
"status": "affected",
"version": "4.4.0"
},
{
"status": "affected",
"version": "4.4.1"
},
{
"status": "affected",
"version": "4.4.2"
},
{
"status": "affected",
"version": "4.4.3"
},
{
"status": "affected",
"version": "4.1.7"
},
{
"status": "affected",
"version": "5.0.0"
},
{
"status": "affected",
"version": "5.0.1"
},
{
"status": "affected",
"version": "5.0.2"
},
{
"status": "affected",
"version": "5.1.0"
},
{
"status": "affected",
"version": "5.1.1"
},
{
"status": "affected",
"version": "5.1.2"
},
{
"status": "affected",
"version": "5.1.3"
},
{
"status": "affected",
"version": "5.2.0"
},
{
"status": "affected",
"version": "5.2.1"
},
{
"status": "affected",
"version": "5.3.0"
},
{
"status": "affected",
"version": "5.3.1"
},
{
"status": "affected",
"version": "5.3.2"
},
{
"status": "affected",
"version": "5.3.3"
},
{
"status": "affected",
"version": "5.5.1"
},
{
"status": "affected",
"version": "5.6.1"
},
{
"status": "affected",
"version": "5.4.0"
},
{
"status": "affected",
"version": "5.4.1"
},
{
"status": "affected",
"version": "5.4.2"
},
{
"status": "affected",
"version": "5.7.0"
},
{
"status": "affected",
"version": "5.8.1"
},
{
"status": "affected",
"version": "5.7.1"
},
{
"status": "affected",
"version": "5.8.0"
},
{
"status": "affected",
"version": "5.5.2"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.3.1a"
},
{
"status": "affected",
"version": "17.3.2"
},
{
"status": "affected",
"version": "17.4.1a"
},
{
"status": "affected",
"version": "17.5.1"
},
{
"status": "affected",
"version": "17.3.3"
},
{
"status": "affected",
"version": "17.5.1a"
},
{
"status": "affected",
"version": "17.3.4"
},
{
"status": "affected",
"version": "17.3.4a"
},
{
"status": "affected",
"version": "17.4.2"
},
{
"status": "affected",
"version": "17.4.1b"
},
{
"status": "affected",
"version": "17.6.1a"
},
{
"status": "affected",
"version": "17.7.1a"
},
{
"status": "affected",
"version": "17.6.2"
},
{
"status": "affected",
"version": "17.8.1a"
},
{
"status": "affected",
"version": "17.3.5"
},
{
"status": "affected",
"version": "17.6.3"
},
{
"status": "affected",
"version": "17.6.3a"
},
{
"status": "affected",
"version": "17.7.2"
},
{
"status": "affected",
"version": "17.9.1a"
},
{
"status": "affected",
"version": "17.6.4"
},
{
"status": "affected",
"version": "17.10.1a"
},
{
"status": "affected",
"version": "17.3.6"
},
{
"status": "affected",
"version": "17.3.7"
},
{
"status": "affected",
"version": "17.9.2a"
},
{
"status": "affected",
"version": "17.6.5"
},
{
"status": "affected",
"version": "17.11.1a"
},
{
"status": "affected",
"version": "17.9.3a"
},
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.9.4"
},
{
"status": "affected",
"version": "17.6.6"
},
{
"status": "affected",
"version": "17.3.8"
},
{
"status": "affected",
"version": "17.3.8a"
},
{
"status": "affected",
"version": "17.6.6a"
},
{
"status": "affected",
"version": "17.9.4a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.9.5a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.6.7"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.6.8"
},
{
"status": "affected",
"version": "17.9.6"
},
{
"status": "affected",
"version": "17.6.8a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.9.5e"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.9.5f"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.9.7a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.9.7b"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.9.8"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.9.9"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
},
{
"status": "affected",
"version": "17.9.10"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20043 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-787",
"description": "Out-of-bounds Write",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:29.730Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-hardening-snort3-ybgmhTQe",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-snort3-ybgmhTQe"
}
],
"source": {
"advisory": "cisco-sa-hardening-snort3-ybgmhTQe",
"defects": [
"CSCwu17797"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Software Hardening Release: October 2026"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20043",
"datePublished": "2026-10-21T16:12:29.730Z",
"dateReserved": "2025-10-08T11:59:15.354Z",
"dateUpdated": "2026-10-21T16:12:29.730Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20019 (GCVE-0-2026-20019)
Vulnerability from nvd – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Netflow Denial of Service Vulnerabilities
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 NetFlow Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to incomplete error checking when Snort 3 parses UDP Netflow Protocol packets. An attacker could exploit this vulnerability by sending a single crafted Netflow packet through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition.
Severity
5.8 (Medium)
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the Snort 3 NetFlow Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r\nThis vulnerability is due to incomplete error checking when Snort 3 parses UDP Netflow Protocol packets. An attacker could exploit this vulnerability by sending a single crafted Netflow packet through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-835",
"description": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:20.285Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-misc-dos-6mB22qAK",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK"
}
],
"source": {
"advisory": "cisco-sa-snort3-misc-dos-6mB22qAK",
"defects": [
"CSCwu23999"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Netflow Denial of Service Vulnerabilities"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20019",
"datePublished": "2026-10-21T16:12:20.285Z",
"dateReserved": "2025-10-08T11:59:15.351Z",
"dateUpdated": "2026-10-21T16:12:20.285Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20011 (GCVE-0-2026-20011)
Vulnerability from nvd – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 SMTP MIME Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart.
This vulnerability is due to a lack of error checking when the MIME fields of the SMTP header are parsed. An attacker could exploit this vulnerability by sending crafted SMTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine unexpectedly restarts.
Severity
5.8 (Medium)
CWE
- CWE-805 - Buffer Access with Incorrect Length Value
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.1.2.0
Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.9.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
3.17.1S
Affected: 16.12.3 Affected: Fuji-16.9.5 Affected: 16.12.4 Affected: 17.3.1a Affected: 16.6.6 Affected: 16.12.2 Affected: Fuji-16.9.6 Affected: 3.17.0S Affected: Fuji-16.9.3 Affected: Denali-16.3.7 Affected: Fuji-16.9.2 Affected: Fuji-16.9.4 Affected: Everest-16.6.4 Affected: Everest-16.6.3 Affected: 16.6.5 Affected: Denali-16.3.5 Affected: 17.2.1r Affected: 17.1.1 Affected: Everest-16.6.2 Affected: 16.6.7a Affected: Denali-16.3.4 Affected: 16.6.1 Affected: Denali-16.3.9 Affected: Denali-16.3.3 Affected: 16.12.1a Affected: 17.3.2 Affected: 17.4.1a Affected: 16.12.5 Affected: Fuji-16.9.7 Affected: 16.6.9 Affected: 17.3.3 Affected: 17.5.1a Affected: 17.3.4a Affected: 17.4.2 Affected: 17.4.1b Affected: 17.6.1a Affected: 16.6.10 Affected: 17.7.1a Affected: 16.12.6 Affected: Fuji-16.9.8 Affected: 17.6.2 Affected: 17.8.1a Affected: 16.12.7 Affected: 17.3.5 Affected: 17.6.3a Affected: 17.7.2 Affected: 17.9.1a Affected: 17.6.4 Affected: 17.10.1a Affected: 17.3.6 Affected: 16.12.8 Affected: 17.3.7 Affected: 17.9.2a Affected: 17.6.5 Affected: 17.11.1a Affected: 17.9.3a Affected: 17.12.1a Affected: 17.9.4 Affected: 17.6.6 Affected: 17.3.8 Affected: 17.12.2 Affected: 17.13.1a Affected: 17.9.5a Affected: 17.12.3 Affected: 17.6.7 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.9.6 Affected: 17.6.8a Affected: 17.16.1a Affected: 17.9.5e Affected: 17.12.4a Affected: 17.15.2c Affected: 17.9.5f Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.9.7a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.9.7b Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.9.8 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.9.9 Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.9.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.17.1S"
},
{
"status": "affected",
"version": "16.12.3"
},
{
"status": "affected",
"version": "Fuji-16.9.5"
},
{
"status": "affected",
"version": "16.12.4"
},
{
"status": "affected",
"version": "17.3.1a"
},
{
"status": "affected",
"version": "16.6.6"
},
{
"status": "affected",
"version": "16.12.2"
},
{
"status": "affected",
"version": "Fuji-16.9.6"
},
{
"status": "affected",
"version": "3.17.0S"
},
{
"status": "affected",
"version": "Fuji-16.9.3"
},
{
"status": "affected",
"version": "Denali-16.3.7"
},
{
"status": "affected",
"version": "Fuji-16.9.2"
},
{
"status": "affected",
"version": "Fuji-16.9.4"
},
{
"status": "affected",
"version": "Everest-16.6.4"
},
{
"status": "affected",
"version": "Everest-16.6.3"
},
{
"status": "affected",
"version": "16.6.5"
},
{
"status": "affected",
"version": "Denali-16.3.5"
},
{
"status": "affected",
"version": "17.2.1r"
},
{
"status": "affected",
"version": "17.1.1"
},
{
"status": "affected",
"version": "Everest-16.6.2"
},
{
"status": "affected",
"version": "16.6.7a"
},
{
"status": "affected",
"version": "Denali-16.3.4"
},
{
"status": "affected",
"version": "16.6.1"
},
{
"status": "affected",
"version": "Denali-16.3.9"
},
{
"status": "affected",
"version": "Denali-16.3.3"
},
{
"status": "affected",
"version": "16.12.1a"
},
{
"status": "affected",
"version": "17.3.2"
},
{
"status": "affected",
"version": "17.4.1a"
},
{
"status": "affected",
"version": "16.12.5"
},
{
"status": "affected",
"version": "Fuji-16.9.7"
},
{
"status": "affected",
"version": "16.6.9"
},
{
"status": "affected",
"version": "17.3.3"
},
{
"status": "affected",
"version": "17.5.1a"
},
{
"status": "affected",
"version": "17.3.4a"
},
{
"status": "affected",
"version": "17.4.2"
},
{
"status": "affected",
"version": "17.4.1b"
},
{
"status": "affected",
"version": "17.6.1a"
},
{
"status": "affected",
"version": "16.6.10"
},
{
"status": "affected",
"version": "17.7.1a"
},
{
"status": "affected",
"version": "16.12.6"
},
{
"status": "affected",
"version": "Fuji-16.9.8"
},
{
"status": "affected",
"version": "17.6.2"
},
{
"status": "affected",
"version": "17.8.1a"
},
{
"status": "affected",
"version": "16.12.7"
},
{
"status": "affected",
"version": "17.3.5"
},
{
"status": "affected",
"version": "17.6.3a"
},
{
"status": "affected",
"version": "17.7.2"
},
{
"status": "affected",
"version": "17.9.1a"
},
{
"status": "affected",
"version": "17.6.4"
},
{
"status": "affected",
"version": "17.10.1a"
},
{
"status": "affected",
"version": "17.3.6"
},
{
"status": "affected",
"version": "16.12.8"
},
{
"status": "affected",
"version": "17.3.7"
},
{
"status": "affected",
"version": "17.9.2a"
},
{
"status": "affected",
"version": "17.6.5"
},
{
"status": "affected",
"version": "17.11.1a"
},
{
"status": "affected",
"version": "17.9.3a"
},
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.9.4"
},
{
"status": "affected",
"version": "17.6.6"
},
{
"status": "affected",
"version": "17.3.8"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.9.5a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.6.7"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.9.6"
},
{
"status": "affected",
"version": "17.6.8a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.9.5e"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.9.5f"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.9.7a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.9.7b"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.9.8"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.9.9"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the Snort 3 SMTP MIME Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart.\r\n\r\nThis vulnerability is due to a lack of error checking when the MIME fields of the SMTP header are parsed. An attacker could exploit this vulnerability by sending crafted SMTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine unexpectedly restarts."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-805",
"description": "Buffer Access with Incorrect Length Value",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:19.429Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-mime-vulns-bkXjcKkt",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-mime-vulns-bkXjcKkt"
}
],
"source": {
"advisory": "cisco-sa-snort3-mime-vulns-bkXjcKkt",
"defects": [
"CSCws62055"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20011",
"datePublished": "2026-10-21T16:12:19.429Z",
"dateReserved": "2025-10-08T11:59:15.350Z",
"dateUpdated": "2026-10-21T16:12:19.429Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-76524 (GCVE-0-2026-76524)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:18 – Updated: 2026-10-21 16:18
VLAI
EPSS
VEX
Title
Open Source Snort 3 Control Channel Socket Aribitrary Command Execution Vulnerability
Summary
A vulnerability in the control channel socket implementation of Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user.
This vulnerability is due to a lack of authentication when a local user connects to the Snort control channel socket. An attacker could exploit this vulnerability by connecting to the Snort 3 control channel socket as a local user. A successful exploit could allow the attacker to execute arbitrary commands as well as read and write Snort 3 process memory.
Severity
7.8 (High)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the control channel socket implementation of\u0026nbsp;Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user.\r\n\r\nThis vulnerability is due to a lack of authentication when a local user connects to the Snort control channel socket. An attacker could exploit this vulnerability by connecting to the Snort 3 control channel socket as a local user. A successful exploit could allow the attacker to execute arbitrary commands as well as read and write Snort 3 process memory."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-306",
"description": "Missing Authentication for Critical Function",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:18:12.052Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-opensrc-snort3-2fXGJPfe",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-opensrc-snort3-2fXGJPfe"
}
],
"source": {
"advisory": "cisco-sa-opensrc-snort3-2fXGJPfe",
"defects": [
"CSCwv48789"
],
"discovery": "EXTERNAL"
},
"title": "Open Source Snort 3 Control Channel Socket Aribitrary Command Execution Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-76524",
"datePublished": "2026-10-21T16:18:12.052Z",
"dateReserved": "2026-08-19T12:02:03.643Z",
"dateUpdated": "2026-10-21T16:18:12.052Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-76489 (GCVE-0-2026-76489)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:17 – Updated: 2026-10-21 16:17
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Generic File Processing Memory Exhaustion Denial of Service Vulnerability
Summary
Multiple Cisco products are affected by a vulnerability in the memory management implementation of Snort 3 that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to incomplete error checking when Snort 3 processes files, which could cause unreleased memory. An attacker could exploit this vulnerability by sending a large number of files to be processed. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition.
Severity
5.8 (Medium)
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.4.7 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.4.7"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the memory management implementation of Snort 3 that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r\nThis vulnerability is due to incomplete error checking when Snort 3 processes files, which could cause unreleased memory. An attacker could exploit this vulnerability by sending a large number of files to be processed. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-401",
"description": "Missing Release of Memory after Effective Lifetime",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:17:23.396Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-misc-dos-6mB22qAK",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK"
}
],
"source": {
"advisory": "cisco-sa-snort3-misc-dos-6mB22qAK",
"defects": [
"CSCwr25134"
],
"discovery": "EXTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Generic File Processing Memory Exhaustion Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-76489",
"datePublished": "2026-10-21T16:17:23.396Z",
"dateReserved": "2026-08-19T12:02:03.640Z",
"dateUpdated": "2026-10-21T16:17:23.396Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-76445 (GCVE-0-2026-76445)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:14 – Updated: 2026-10-21 16:14
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Denial of Service Vulnerability
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the detection engine to unexpectedly restart, resulting in a denial of service (DoS) condition.
The vulnerability is due to a flaw in logic handling when General Packet Radio Service (GPRS) Tunneling Protocol (GTP) extension headers are processed within the codec. An attacker could exploit this vulnerability by sending a crafted, fragmented UDP datagram that contains these headers to the Snort 3 Detection Engine of an affected device. A successful exploit could allow the attacker to cause the detection engine to enter an infinite loop, resulting in a DoS condition.
Severity
5.3 (Medium)
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.12.3 Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the detection engine to unexpectedly restart, resulting in a denial of service (DoS) condition.\r\n\r\nThe vulnerability is due to a flaw in logic handling when General Packet Radio Service (GPRS) Tunneling Protocol (GTP) extension headers are processed within the codec. An attacker could exploit this vulnerability by sending a crafted, fragmented UDP datagram that contains these headers to the Snort 3 Detection Engine of an affected device. A successful exploit could allow the attacker to cause the detection engine to enter an infinite loop, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-835",
"description": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:14:39.374Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-gtpcodec-dos-Rmecfepz",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-gtpcodec-dos-Rmecfepz"
}
],
"source": {
"advisory": "cisco-sa-snort3-gtpcodec-dos-Rmecfepz",
"defects": [
"CSCwu17795"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-76445",
"datePublished": "2026-10-21T16:14:39.374Z",
"dateReserved": "2026-08-19T12:02:03.635Z",
"dateUpdated": "2026-10-21T16:14:39.374Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20356 (GCVE-0-2026-20356)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:13 – Updated: 2026-10-21 16:13
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20356 are related to issues concerning uncontrolled resource consumption that are grouped under the Common Weakness Enumeration (CWE) Base CWE-400.
Severity
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Affected:
3.0.0
Affected: 3.0.2 Affected: 3.0.3 Affected: 3.0.1 Affected: 3.1.0 Affected: 3.0.4 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.2.0 Affected: 3.0.5 Affected: 3.2.1 Affected: 3.0.6 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.2.4 Affected: 4.0.0 Affected: 4.0.1 Affected: 4.0.2 Affected: 4.0.3 Affected: 4.1.0 Affected: 4.1.1 Affected: 4.1.2 Affected: 4.1.3 Affected: 4.1.4 Affected: 4.2.0 Affected: 4.2.1 Affected: 4.1.5 Affected: 4.2.2 Affected: 4.2.X Affected: 4.2.3 Affected: 4.2.4 Affected: 4.2.6 Affected: 4.1.6 Affected: 4.3.0 Affected: 4.3.1 Affected: 4.3.2 Affected: 4.3.3 Affected: 4.4.0 Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.1.7 Affected: 5.0.0 Affected: 5.0.1 Affected: 5.0.2 Affected: 5.1.0 Affected: 5.1.1 Affected: 5.1.2 Affected: 5.1.3 Affected: 5.2.0 Affected: 5.2.1 Affected: 5.3.0 Affected: 5.3.1 Affected: 5.3.2 Affected: 5.3.3 Affected: 5.5.1 Affected: 5.6.1 Affected: 5.4.0 Affected: 5.4.1 Affected: 5.4.2 Affected: 5.7.0 Affected: 5.8.1 Affected: 5.7.1 Affected: 5.8.0 Affected: 5.5.2 |
|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Cyber Vision",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.3"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.0.6"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.2.4"
},
{
"status": "affected",
"version": "4.0.0"
},
{
"status": "affected",
"version": "4.0.1"
},
{
"status": "affected",
"version": "4.0.2"
},
{
"status": "affected",
"version": "4.0.3"
},
{
"status": "affected",
"version": "4.1.0"
},
{
"status": "affected",
"version": "4.1.1"
},
{
"status": "affected",
"version": "4.1.2"
},
{
"status": "affected",
"version": "4.1.3"
},
{
"status": "affected",
"version": "4.1.4"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.2.1"
},
{
"status": "affected",
"version": "4.1.5"
},
{
"status": "affected",
"version": "4.2.2"
},
{
"status": "affected",
"version": "4.2.X"
},
{
"status": "affected",
"version": "4.2.3"
},
{
"status": "affected",
"version": "4.2.4"
},
{
"status": "affected",
"version": "4.2.6"
},
{
"status": "affected",
"version": "4.1.6"
},
{
"status": "affected",
"version": "4.3.0"
},
{
"status": "affected",
"version": "4.3.1"
},
{
"status": "affected",
"version": "4.3.2"
},
{
"status": "affected",
"version": "4.3.3"
},
{
"status": "affected",
"version": "4.4.0"
},
{
"status": "affected",
"version": "4.4.1"
},
{
"status": "affected",
"version": "4.4.2"
},
{
"status": "affected",
"version": "4.4.3"
},
{
"status": "affected",
"version": "4.1.7"
},
{
"status": "affected",
"version": "5.0.0"
},
{
"status": "affected",
"version": "5.0.1"
},
{
"status": "affected",
"version": "5.0.2"
},
{
"status": "affected",
"version": "5.1.0"
},
{
"status": "affected",
"version": "5.1.1"
},
{
"status": "affected",
"version": "5.1.2"
},
{
"status": "affected",
"version": "5.1.3"
},
{
"status": "affected",
"version": "5.2.0"
},
{
"status": "affected",
"version": "5.2.1"
},
{
"status": "affected",
"version": "5.3.0"
},
{
"status": "affected",
"version": "5.3.1"
},
{
"status": "affected",
"version": "5.3.2"
},
{
"status": "affected",
"version": "5.3.3"
},
{
"status": "affected",
"version": "5.5.1"
},
{
"status": "affected",
"version": "5.6.1"
},
{
"status": "affected",
"version": "5.4.0"
},
{
"status": "affected",
"version": "5.4.1"
},
{
"status": "affected",
"version": "5.4.2"
},
{
"status": "affected",
"version": "5.7.0"
},
{
"status": "affected",
"version": "5.8.1"
},
{
"status": "affected",
"version": "5.7.1"
},
{
"status": "affected",
"version": "5.8.0"
},
{
"status": "affected",
"version": "5.5.2"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20356 are related to issues concerning uncontrolled resource consumption that are grouped under the Common Weakness Enumeration (CWE) Base CWE-400."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "Uncontrolled Resource Consumption",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:13:06.738Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-hardening-snort3-ybgmhTQe",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-snort3-ybgmhTQe"
}
],
"source": {
"advisory": "cisco-sa-hardening-snort3-ybgmhTQe",
"defects": [
"CSCwu24015"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Software Hardening Release: October 2026"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20356",
"datePublished": "2026-10-21T16:13:06.738Z",
"dateReserved": "2025-10-08T11:59:15.414Z",
"dateUpdated": "2026-10-21T16:13:06.738Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20236 (GCVE-0-2026-20236)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20236 are related to issues concerning incorrect calculation that are grouped under the Common Weakness Enumeration (CWE) Base CWE-682.
Severity
7.5 (High)
CWE
- CWE-682 - Incorrect Calculation
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Affected:
3.0.0
Affected: 3.0.2 Affected: 3.0.3 Affected: 3.0.1 Affected: 3.1.0 Affected: 3.0.4 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.2.0 Affected: 3.0.5 Affected: 3.2.1 Affected: 3.0.6 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.2.4 Affected: 4.0.0 Affected: 4.0.1 Affected: 4.0.2 Affected: 4.0.3 Affected: 4.1.0 Affected: 4.1.1 Affected: 4.1.2 Affected: 4.1.3 Affected: 4.1.4 Affected: 4.2.0 Affected: 4.2.1 Affected: 4.1.5 Affected: 4.2.2 Affected: 4.2.X Affected: 4.2.3 Affected: 4.2.4 Affected: 4.2.6 Affected: 4.1.6 Affected: 4.3.0 Affected: 4.3.1 Affected: 4.3.2 Affected: 4.3.3 Affected: 4.4.0 Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.1.7 Affected: 5.0.0 Affected: 5.0.1 Affected: 5.0.2 Affected: 5.1.0 Affected: 5.1.1 Affected: 5.1.2 Affected: 5.1.3 Affected: 5.2.0 Affected: 5.2.1 Affected: 5.3.0 Affected: 5.3.1 Affected: 5.3.2 Affected: 5.3.3 Affected: 5.5.1 Affected: 5.6.1 Affected: 5.4.0 Affected: 5.4.1 Affected: 5.4.2 Affected: 5.7.0 Affected: 5.8.1 Affected: 5.7.1 Affected: 5.8.0 Affected: 5.5.2 |
|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Cyber Vision",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.3"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.0.6"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.2.4"
},
{
"status": "affected",
"version": "4.0.0"
},
{
"status": "affected",
"version": "4.0.1"
},
{
"status": "affected",
"version": "4.0.2"
},
{
"status": "affected",
"version": "4.0.3"
},
{
"status": "affected",
"version": "4.1.0"
},
{
"status": "affected",
"version": "4.1.1"
},
{
"status": "affected",
"version": "4.1.2"
},
{
"status": "affected",
"version": "4.1.3"
},
{
"status": "affected",
"version": "4.1.4"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.2.1"
},
{
"status": "affected",
"version": "4.1.5"
},
{
"status": "affected",
"version": "4.2.2"
},
{
"status": "affected",
"version": "4.2.X"
},
{
"status": "affected",
"version": "4.2.3"
},
{
"status": "affected",
"version": "4.2.4"
},
{
"status": "affected",
"version": "4.2.6"
},
{
"status": "affected",
"version": "4.1.6"
},
{
"status": "affected",
"version": "4.3.0"
},
{
"status": "affected",
"version": "4.3.1"
},
{
"status": "affected",
"version": "4.3.2"
},
{
"status": "affected",
"version": "4.3.3"
},
{
"status": "affected",
"version": "4.4.0"
},
{
"status": "affected",
"version": "4.4.1"
},
{
"status": "affected",
"version": "4.4.2"
},
{
"status": "affected",
"version": "4.4.3"
},
{
"status": "affected",
"version": "4.1.7"
},
{
"status": "affected",
"version": "5.0.0"
},
{
"status": "affected",
"version": "5.0.1"
},
{
"status": "affected",
"version": "5.0.2"
},
{
"status": "affected",
"version": "5.1.0"
},
{
"status": "affected",
"version": "5.1.1"
},
{
"status": "affected",
"version": "5.1.2"
},
{
"status": "affected",
"version": "5.1.3"
},
{
"status": "affected",
"version": "5.2.0"
},
{
"status": "affected",
"version": "5.2.1"
},
{
"status": "affected",
"version": "5.3.0"
},
{
"status": "affected",
"version": "5.3.1"
},
{
"status": "affected",
"version": "5.3.2"
},
{
"status": "affected",
"version": "5.3.3"
},
{
"status": "affected",
"version": "5.5.1"
},
{
"status": "affected",
"version": "5.6.1"
},
{
"status": "affected",
"version": "5.4.0"
},
{
"status": "affected",
"version": "5.4.1"
},
{
"status": "affected",
"version": "5.4.2"
},
{
"status": "affected",
"version": "5.7.0"
},
{
"status": "affected",
"version": "5.8.1"
},
{
"status": "affected",
"version": "5.7.1"
},
{
"status": "affected",
"version": "5.8.0"
},
{
"status": "affected",
"version": "5.5.2"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20236 are related to issues concerning incorrect calculation that are grouped under the Common Weakness Enumeration (CWE) Base CWE-682."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-682",
"description": "Incorrect Calculation",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:58.186Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-hardening-snort3-ybgmhTQe",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-snort3-ybgmhTQe"
}
],
"source": {
"advisory": "cisco-sa-hardening-snort3-ybgmhTQe",
"defects": [
"CSCwu17795"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Software Hardening Release: October 2026"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20236",
"datePublished": "2026-10-21T16:12:58.186Z",
"dateReserved": "2025-10-08T11:59:15.400Z",
"dateUpdated": "2026-10-21T16:12:58.186Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20221 (GCVE-0-2026-20221)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities
Summary
Multiple Cisco products are affected by a vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause an unexpected restart of the Snort 3 Detection Engine.
This vulnerability is due to improper handling of nested GRE traffic. An attacker could exploit this vulnerability by sending a crafted GRE payload through an affected device. A successful exploit could allow the attacker to trigger an unexpected reload of the Snort 3 Detection Engine, resulting in either a bypass or denial of service (DoS) condition, depending on device configuration. For more information, see the section of this advisory. The Snort 3 Detection Engine will restart automatically. No manual intervention is required.
Severity
5.8 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Affected:
3.0.0
Affected: 3.0.2 Affected: 3.0.3 Affected: 3.0.1 Affected: 3.1.0 Affected: 3.0.4 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.2.0 Affected: 3.0.5 Affected: 3.2.1 Affected: 3.0.6 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.2.4 Affected: 4.0.0 Affected: 4.0.1 Affected: 4.0.2 Affected: 4.0.3 Affected: 4.1.0 Affected: 4.1.1 Affected: 4.1.2 Affected: 4.1.3 Affected: 4.1.4 Affected: 4.2.0 Affected: 4.2.1 Affected: 4.1.5 Affected: 4.2.2 Affected: 4.2.X Affected: 4.2.3 Affected: 4.2.4 Affected: 4.2.6 Affected: 4.1.6 Affected: 4.3.0 Affected: 4.3.1 Affected: 4.3.2 Affected: 4.3.3 Affected: 4.4.0 Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.1.7 Affected: 5.0.0 Affected: 5.0.1 Affected: 5.0.2 Affected: 5.1.0 Affected: 5.1.1 Affected: 5.1.2 Affected: 5.1.3 Affected: 5.2.0 Affected: 5.2.1 Affected: 5.3.0 Affected: 5.3.1 Affected: 5.3.2 Affected: 5.3.3 Affected: 5.5.1 Affected: 5.6.1 Affected: 5.6.0 Affected: 5.4.0 Affected: 5.4.1 Affected: 5.4.2 |
|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco Umbrella Insights Virtual Appliance |
Affected:
2.6.0
Affected: 2.5.6 Affected: 2.5 Affected: 2.4.12 Affected: 2.7 Affected: 2.6.2 Affected: 2.5.5 Affected: 2.5.4 Affected: 2.8 Affected: 2.6.1 Affected: 2.5.7 Affected: 1.5.4 Affected: 1.5.5 Affected: 1.5.6 Affected: 2.0.0 Affected: 2.0.2 Affected: 2.0.3 Affected: 2.1.0 Affected: 2.1.2 Affected: 2.1.4 Affected: 2.1.5 Affected: 2.2 Affected: 2.2.1 Affected: 2.3 Affected: 2.3.1 Affected: 2.4 Affected: 2.4.4 Affected: 2.4.6 Affected: 2.8.9 Affected: 3.0 Affected: 3.1 Affected: 3.2 Affected: 2.8.1 Affected: 2.8.2 Affected: 2.8.3 Affected: 2.8.4 Affected: 2.8.5 Affected: 3.0.1 Affected: 3.0.2 Affected: 3.0.4 Affected: 3.0.5 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.1.3 Affected: 3.1.4 Affected: 3.2.1 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.3 Affected: 3.3.1 Affected: 3.3.2 Affected: 3.3.3 Affected: 3.3.4 Affected: 3.4 Affected: 3.4.1 Affected: 3.4.2 Affected: 3.4.3 Affected: 3.4.4 Affected: 3.4.5 Affected: 3.4.6 Affected: 3.5 Affected: 2.7.1 Affected: 2.7.2 Affected: 2.7.6 Affected: 2.7.9 Affected: 2.7.10 Affected: 3.5.1 Affected: 3.5.2 Affected: 3.6.1 Affected: 3.6.2 Affected: 3.7 Affected: 3.7.1 Affected: 3.8.3 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
3.17.1S
Affected: 16.12.3 Affected: Fuji-16.9.5 Affected: 16.12.4 Affected: 17.3.1a Affected: 16.6.6 Affected: 16.12.2 Affected: Fuji-16.9.6 Affected: 3.17.0S Affected: Fuji-16.9.3 Affected: Denali-16.3.7 Affected: Fuji-16.9.2 Affected: Fuji-16.9.4 Affected: Everest-16.6.4 Affected: Everest-16.6.3 Affected: 16.6.5 Affected: Denali-16.3.5 Affected: 17.2.1r Affected: 17.1.1 Affected: Everest-16.6.2 Affected: 16.6.7a Affected: Denali-16.3.4 Affected: 16.6.1 Affected: Denali-16.3.9 Affected: Denali-16.3.3 Affected: 16.12.1a Affected: 17.3.2 Affected: 17.4.1a Affected: 16.12.5 Affected: 17.5.1 Affected: Fuji-16.9.7 Affected: 16.6.9 Affected: 17.3.3 Affected: 17.5.1a Affected: 17.3.4 Affected: 17.3.4a Affected: 17.4.2 Affected: 17.4.1b Affected: 17.6.1a Affected: 16.6.10 Affected: 17.7.1a Affected: 16.12.6 Affected: Fuji-16.9.8 Affected: 17.6.2 Affected: 17.8.1a Affected: 16.12.7 Affected: 17.3.5 Affected: 17.6.3 Affected: 17.6.3a Affected: 17.7.2 Affected: 17.9.1a Affected: 17.6.4 Affected: 17.10.1a Affected: 17.3.6 Affected: 16.12.8 Affected: 17.3.7 Affected: 17.9.2a Affected: 17.6.5 Affected: 17.11.1a Affected: 17.9.3a Affected: 17.12.1a Affected: 17.9.4 Affected: 17.6.6 Affected: 17.3.8 Affected: 17.3.8a Affected: 17.6.6a Affected: 17.9.4a Affected: 17.12.2 Affected: 17.13.1a Affected: 17.9.5a Affected: 17.12.3 Affected: 17.6.7 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.6.8 Affected: 17.9.6 Affected: 17.6.8a Affected: 17.16.1a Affected: 17.9.5e Affected: 17.12.4a Affected: 17.15.2c Affected: 17.9.5f Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.9.7a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.9.7b Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.9.8 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.9.9 Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 Affected: 17.9.10 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Cyber Vision",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.3"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.0.6"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.2.4"
},
{
"status": "affected",
"version": "4.0.0"
},
{
"status": "affected",
"version": "4.0.1"
},
{
"status": "affected",
"version": "4.0.2"
},
{
"status": "affected",
"version": "4.0.3"
},
{
"status": "affected",
"version": "4.1.0"
},
{
"status": "affected",
"version": "4.1.1"
},
{
"status": "affected",
"version": "4.1.2"
},
{
"status": "affected",
"version": "4.1.3"
},
{
"status": "affected",
"version": "4.1.4"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.2.1"
},
{
"status": "affected",
"version": "4.1.5"
},
{
"status": "affected",
"version": "4.2.2"
},
{
"status": "affected",
"version": "4.2.X"
},
{
"status": "affected",
"version": "4.2.3"
},
{
"status": "affected",
"version": "4.2.4"
},
{
"status": "affected",
"version": "4.2.6"
},
{
"status": "affected",
"version": "4.1.6"
},
{
"status": "affected",
"version": "4.3.0"
},
{
"status": "affected",
"version": "4.3.1"
},
{
"status": "affected",
"version": "4.3.2"
},
{
"status": "affected",
"version": "4.3.3"
},
{
"status": "affected",
"version": "4.4.0"
},
{
"status": "affected",
"version": "4.4.1"
},
{
"status": "affected",
"version": "4.4.2"
},
{
"status": "affected",
"version": "4.4.3"
},
{
"status": "affected",
"version": "4.1.7"
},
{
"status": "affected",
"version": "5.0.0"
},
{
"status": "affected",
"version": "5.0.1"
},
{
"status": "affected",
"version": "5.0.2"
},
{
"status": "affected",
"version": "5.1.0"
},
{
"status": "affected",
"version": "5.1.1"
},
{
"status": "affected",
"version": "5.1.2"
},
{
"status": "affected",
"version": "5.1.3"
},
{
"status": "affected",
"version": "5.2.0"
},
{
"status": "affected",
"version": "5.2.1"
},
{
"status": "affected",
"version": "5.3.0"
},
{
"status": "affected",
"version": "5.3.1"
},
{
"status": "affected",
"version": "5.3.2"
},
{
"status": "affected",
"version": "5.3.3"
},
{
"status": "affected",
"version": "5.5.1"
},
{
"status": "affected",
"version": "5.6.1"
},
{
"status": "affected",
"version": "5.6.0"
},
{
"status": "affected",
"version": "5.4.0"
},
{
"status": "affected",
"version": "5.4.1"
},
{
"status": "affected",
"version": "5.4.2"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Umbrella Insights Virtual Appliance",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "2.6.0"
},
{
"status": "affected",
"version": "2.5.6"
},
{
"status": "affected",
"version": "2.5"
},
{
"status": "affected",
"version": "2.4.12"
},
{
"status": "affected",
"version": "2.7"
},
{
"status": "affected",
"version": "2.6.2"
},
{
"status": "affected",
"version": "2.5.5"
},
{
"status": "affected",
"version": "2.5.4"
},
{
"status": "affected",
"version": "2.8"
},
{
"status": "affected",
"version": "2.6.1"
},
{
"status": "affected",
"version": "2.5.7"
},
{
"status": "affected",
"version": "1.5.4"
},
{
"status": "affected",
"version": "1.5.5"
},
{
"status": "affected",
"version": "1.5.6"
},
{
"status": "affected",
"version": "2.0.0"
},
{
"status": "affected",
"version": "2.0.2"
},
{
"status": "affected",
"version": "2.0.3"
},
{
"status": "affected",
"version": "2.1.0"
},
{
"status": "affected",
"version": "2.1.2"
},
{
"status": "affected",
"version": "2.1.4"
},
{
"status": "affected",
"version": "2.1.5"
},
{
"status": "affected",
"version": "2.2"
},
{
"status": "affected",
"version": "2.2.1"
},
{
"status": "affected",
"version": "2.3"
},
{
"status": "affected",
"version": "2.3.1"
},
{
"status": "affected",
"version": "2.4"
},
{
"status": "affected",
"version": "2.4.4"
},
{
"status": "affected",
"version": "2.4.6"
},
{
"status": "affected",
"version": "2.8.9"
},
{
"status": "affected",
"version": "3.0"
},
{
"status": "affected",
"version": "3.1"
},
{
"status": "affected",
"version": "3.2"
},
{
"status": "affected",
"version": "2.8.1"
},
{
"status": "affected",
"version": "2.8.2"
},
{
"status": "affected",
"version": "2.8.3"
},
{
"status": "affected",
"version": "2.8.4"
},
{
"status": "affected",
"version": "2.8.5"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.1.3"
},
{
"status": "affected",
"version": "3.1.4"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.3"
},
{
"status": "affected",
"version": "3.3.1"
},
{
"status": "affected",
"version": "3.3.2"
},
{
"status": "affected",
"version": "3.3.3"
},
{
"status": "affected",
"version": "3.3.4"
},
{
"status": "affected",
"version": "3.4"
},
{
"status": "affected",
"version": "3.4.1"
},
{
"status": "affected",
"version": "3.4.2"
},
{
"status": "affected",
"version": "3.4.3"
},
{
"status": "affected",
"version": "3.4.4"
},
{
"status": "affected",
"version": "3.4.5"
},
{
"status": "affected",
"version": "3.4.6"
},
{
"status": "affected",
"version": "3.5"
},
{
"status": "affected",
"version": "2.7.1"
},
{
"status": "affected",
"version": "2.7.2"
},
{
"status": "affected",
"version": "2.7.6"
},
{
"status": "affected",
"version": "2.7.9"
},
{
"status": "affected",
"version": "2.7.10"
},
{
"status": "affected",
"version": "3.5.1"
},
{
"status": "affected",
"version": "3.5.2"
},
{
"status": "affected",
"version": "3.6.1"
},
{
"status": "affected",
"version": "3.6.2"
},
{
"status": "affected",
"version": "3.7"
},
{
"status": "affected",
"version": "3.7.1"
},
{
"status": "affected",
"version": "3.8.3"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.17.1S"
},
{
"status": "affected",
"version": "16.12.3"
},
{
"status": "affected",
"version": "Fuji-16.9.5"
},
{
"status": "affected",
"version": "16.12.4"
},
{
"status": "affected",
"version": "17.3.1a"
},
{
"status": "affected",
"version": "16.6.6"
},
{
"status": "affected",
"version": "16.12.2"
},
{
"status": "affected",
"version": "Fuji-16.9.6"
},
{
"status": "affected",
"version": "3.17.0S"
},
{
"status": "affected",
"version": "Fuji-16.9.3"
},
{
"status": "affected",
"version": "Denali-16.3.7"
},
{
"status": "affected",
"version": "Fuji-16.9.2"
},
{
"status": "affected",
"version": "Fuji-16.9.4"
},
{
"status": "affected",
"version": "Everest-16.6.4"
},
{
"status": "affected",
"version": "Everest-16.6.3"
},
{
"status": "affected",
"version": "16.6.5"
},
{
"status": "affected",
"version": "Denali-16.3.5"
},
{
"status": "affected",
"version": "17.2.1r"
},
{
"status": "affected",
"version": "17.1.1"
},
{
"status": "affected",
"version": "Everest-16.6.2"
},
{
"status": "affected",
"version": "16.6.7a"
},
{
"status": "affected",
"version": "Denali-16.3.4"
},
{
"status": "affected",
"version": "16.6.1"
},
{
"status": "affected",
"version": "Denali-16.3.9"
},
{
"status": "affected",
"version": "Denali-16.3.3"
},
{
"status": "affected",
"version": "16.12.1a"
},
{
"status": "affected",
"version": "17.3.2"
},
{
"status": "affected",
"version": "17.4.1a"
},
{
"status": "affected",
"version": "16.12.5"
},
{
"status": "affected",
"version": "17.5.1"
},
{
"status": "affected",
"version": "Fuji-16.9.7"
},
{
"status": "affected",
"version": "16.6.9"
},
{
"status": "affected",
"version": "17.3.3"
},
{
"status": "affected",
"version": "17.5.1a"
},
{
"status": "affected",
"version": "17.3.4"
},
{
"status": "affected",
"version": "17.3.4a"
},
{
"status": "affected",
"version": "17.4.2"
},
{
"status": "affected",
"version": "17.4.1b"
},
{
"status": "affected",
"version": "17.6.1a"
},
{
"status": "affected",
"version": "16.6.10"
},
{
"status": "affected",
"version": "17.7.1a"
},
{
"status": "affected",
"version": "16.12.6"
},
{
"status": "affected",
"version": "Fuji-16.9.8"
},
{
"status": "affected",
"version": "17.6.2"
},
{
"status": "affected",
"version": "17.8.1a"
},
{
"status": "affected",
"version": "16.12.7"
},
{
"status": "affected",
"version": "17.3.5"
},
{
"status": "affected",
"version": "17.6.3"
},
{
"status": "affected",
"version": "17.6.3a"
},
{
"status": "affected",
"version": "17.7.2"
},
{
"status": "affected",
"version": "17.9.1a"
},
{
"status": "affected",
"version": "17.6.4"
},
{
"status": "affected",
"version": "17.10.1a"
},
{
"status": "affected",
"version": "17.3.6"
},
{
"status": "affected",
"version": "16.12.8"
},
{
"status": "affected",
"version": "17.3.7"
},
{
"status": "affected",
"version": "17.9.2a"
},
{
"status": "affected",
"version": "17.6.5"
},
{
"status": "affected",
"version": "17.11.1a"
},
{
"status": "affected",
"version": "17.9.3a"
},
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.9.4"
},
{
"status": "affected",
"version": "17.6.6"
},
{
"status": "affected",
"version": "17.3.8"
},
{
"status": "affected",
"version": "17.3.8a"
},
{
"status": "affected",
"version": "17.6.6a"
},
{
"status": "affected",
"version": "17.9.4a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.9.5a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.6.7"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.6.8"
},
{
"status": "affected",
"version": "17.9.6"
},
{
"status": "affected",
"version": "17.6.8a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.9.5e"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.9.5f"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.9.7a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.9.7b"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.9.8"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.9.9"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
},
{
"status": "affected",
"version": "17.9.10"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause an unexpected restart of the Snort 3 Detection Engine.\r\n\r\nThis vulnerability is due to improper handling of nested GRE traffic. An attacker could exploit this vulnerability by sending a crafted GRE payload through an affected device. A successful exploit could allow the attacker to trigger an unexpected reload of the Snort 3 Detection Engine, resulting in either a bypass or denial of service (DoS) condition, depending on device configuration. For more information, see the section of this advisory. The Snort 3 Detection Engine will restart automatically. No manual intervention is required."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "NULL Pointer Dereference",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:53.435Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-gre-JNpMHrTv",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-gre-JNpMHrTv"
}
],
"source": {
"advisory": "cisco-sa-snort3-gre-JNpMHrTv",
"defects": [
"CSCwt66239"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20221",
"datePublished": "2026-10-21T16:12:53.435Z",
"dateReserved": "2025-10-08T11:59:15.398Z",
"dateUpdated": "2026-10-21T16:12:53.435Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20291 (GCVE-0-2026-20291)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20291 are related to issues concerning improper privilege management that are grouped under the Common Weakness Enumeration (CWE) Base CWE-269.
Severity
7.8 (High)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Affected:
3.0.0
Affected: 3.0.2 Affected: 3.0.3 Affected: 3.0.1 Affected: 3.1.0 Affected: 3.0.4 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.2.0 Affected: 3.0.5 Affected: 3.2.1 Affected: 3.0.6 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.2.4 Affected: 4.0.0 Affected: 4.0.1 Affected: 4.0.2 Affected: 4.0.3 Affected: 4.1.0 Affected: 4.1.1 Affected: 4.1.2 Affected: 4.1.3 Affected: 4.1.4 Affected: 4.2.0 Affected: 4.2.1 Affected: 4.1.5 Affected: 4.2.2 Affected: 4.2.X Affected: 4.2.3 Affected: 4.2.4 Affected: 4.2.6 Affected: 4.1.6 Affected: 4.3.0 Affected: 4.3.1 Affected: 4.3.2 Affected: 4.3.3 Affected: 4.4.0 Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.1.7 Affected: 5.0.0 Affected: 5.0.1 Affected: 5.0.2 Affected: 5.1.0 Affected: 5.1.1 Affected: 5.1.2 Affected: 5.1.3 Affected: 5.2.0 Affected: 5.2.1 Affected: 5.3.0 Affected: 5.3.1 Affected: 5.3.2 Affected: 5.3.3 Affected: 5.5.1 Affected: 5.6.1 Affected: 5.4.0 Affected: 5.4.1 Affected: 5.4.2 Affected: 5.7.0 Affected: 5.8.1 Affected: 5.7.1 Affected: 5.8.0 Affected: 5.5.2 |
|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Cyber Vision",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.3"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.0.6"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.2.4"
},
{
"status": "affected",
"version": "4.0.0"
},
{
"status": "affected",
"version": "4.0.1"
},
{
"status": "affected",
"version": "4.0.2"
},
{
"status": "affected",
"version": "4.0.3"
},
{
"status": "affected",
"version": "4.1.0"
},
{
"status": "affected",
"version": "4.1.1"
},
{
"status": "affected",
"version": "4.1.2"
},
{
"status": "affected",
"version": "4.1.3"
},
{
"status": "affected",
"version": "4.1.4"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.2.1"
},
{
"status": "affected",
"version": "4.1.5"
},
{
"status": "affected",
"version": "4.2.2"
},
{
"status": "affected",
"version": "4.2.X"
},
{
"status": "affected",
"version": "4.2.3"
},
{
"status": "affected",
"version": "4.2.4"
},
{
"status": "affected",
"version": "4.2.6"
},
{
"status": "affected",
"version": "4.1.6"
},
{
"status": "affected",
"version": "4.3.0"
},
{
"status": "affected",
"version": "4.3.1"
},
{
"status": "affected",
"version": "4.3.2"
},
{
"status": "affected",
"version": "4.3.3"
},
{
"status": "affected",
"version": "4.4.0"
},
{
"status": "affected",
"version": "4.4.1"
},
{
"status": "affected",
"version": "4.4.2"
},
{
"status": "affected",
"version": "4.4.3"
},
{
"status": "affected",
"version": "4.1.7"
},
{
"status": "affected",
"version": "5.0.0"
},
{
"status": "affected",
"version": "5.0.1"
},
{
"status": "affected",
"version": "5.0.2"
},
{
"status": "affected",
"version": "5.1.0"
},
{
"status": "affected",
"version": "5.1.1"
},
{
"status": "affected",
"version": "5.1.2"
},
{
"status": "affected",
"version": "5.1.3"
},
{
"status": "affected",
"version": "5.2.0"
},
{
"status": "affected",
"version": "5.2.1"
},
{
"status": "affected",
"version": "5.3.0"
},
{
"status": "affected",
"version": "5.3.1"
},
{
"status": "affected",
"version": "5.3.2"
},
{
"status": "affected",
"version": "5.3.3"
},
{
"status": "affected",
"version": "5.5.1"
},
{
"status": "affected",
"version": "5.6.1"
},
{
"status": "affected",
"version": "5.4.0"
},
{
"status": "affected",
"version": "5.4.1"
},
{
"status": "affected",
"version": "5.4.2"
},
{
"status": "affected",
"version": "5.7.0"
},
{
"status": "affected",
"version": "5.8.1"
},
{
"status": "affected",
"version": "5.7.1"
},
{
"status": "affected",
"version": "5.8.0"
},
{
"status": "affected",
"version": "5.5.2"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20291 are related to issues concerning improper privilege management that are grouped under the Common Weakness Enumeration (CWE) Base CWE-269."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-269",
"description": "Improper Privilege Management",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:53.383Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-hardening-snort3-ybgmhTQe",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-snort3-ybgmhTQe"
}
],
"source": {
"advisory": "cisco-sa-hardening-snort3-ybgmhTQe",
"defects": [
"CSCwu22792"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Software Hardening Release: October 2026"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20291",
"datePublished": "2026-10-21T16:12:53.383Z",
"dateReserved": "2025-10-08T11:59:15.405Z",
"dateUpdated": "2026-10-21T16:12:53.383Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20197 (GCVE-0-2026-20197)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Teredo Protocol Denial of Service Vulnerability
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 Teredo Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to incomplete error checking when Snort 3 parses Teredo packets. An attacker could exploit this vulnerability by sending a crafted Teredo packet to a targeted device to be parsed by Snort. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition.
Severity
5.8 (Medium)
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the Snort 3 Teredo Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r\nThis vulnerability is due to incomplete error checking when Snort 3 parses Teredo packets. An attacker could exploit this vulnerability by sending a crafted Teredo packet to a targeted device to be parsed by Snort. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-119",
"description": "Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:40.477Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-misc-dos-6mB22qAK",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK"
}
],
"source": {
"advisory": "cisco-sa-snort3-misc-dos-6mB22qAK",
"defects": [
"CSCwu51451"
],
"discovery": "EXTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Teredo Protocol Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20197",
"datePublished": "2026-10-21T16:12:40.477Z",
"dateReserved": "2025-10-08T11:59:15.396Z",
"dateUpdated": "2026-10-21T16:12:40.477Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20218 (GCVE-0-2026-20218)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Cisco Secure Firewall Threat Defense Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability
Summary
A vulnerability in the Snort 3 Visual Basic for Applications (VBA) Decompression Engine of multiple Cisco products could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a denial of service (DoS) condition.
This vulnerability is due to improper range checking when Snort 3 decompresses VBA data, which is user controlled. An attacker could exploit this vulnerability by sending crafted VBA data to the Snort 3 Detection Engine of a targeted device. A successful exploit could allow the attacker to cause an overflow of stack data, which could result in a DoS condition.
Severity
5.8 (Medium)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.2.0
Affected: 7.2.0.1 Affected: 7.2.1 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the Snort 3 Visual Basic for Applications (VBA) Decompression Engine of multiple Cisco products could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to improper range checking when Snort 3 decompresses VBA data, which is user controlled. An attacker could exploit this vulnerability by sending crafted VBA data to the Snort 3 Detection Engine of a targeted device. A successful exploit could allow the attacker to cause an overflow of stack data, which could result in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-121",
"description": "Stack-based Buffer Overflow",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:38.494Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-vba-bufdos-jAuFdvn9",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-vba-bufdos-jAuFdvn9"
}
],
"source": {
"advisory": "cisco-sa-snort3-vba-bufdos-jAuFdvn9",
"defects": [
"CSCwv01924"
],
"discovery": "EXTERNAL"
},
"title": "Cisco Secure Firewall Threat Defense Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20218",
"datePublished": "2026-10-21T16:12:38.494Z",
"dateReserved": "2025-10-08T11:59:15.398Z",
"dateUpdated": "2026-10-21T16:12:38.494Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20179 (GCVE-0-2026-20179)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 Generic Routing Encapsulation (GRE) Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to incomplete error checking when Snort 3 parses GRE packets. An attacker could exploit this vulnerability by sending a crafted GRE packet to a targeted device to be parsed by Snort. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition.
Severity
5.8 (Medium)
CWE
- CWE-128 - Wrap-around Error
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the Snort 3 Generic Routing Encapsulation (GRE) Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r\nThis vulnerability is due to incomplete error checking when Snort 3 parses GRE packets. An attacker could exploit this vulnerability by sending a crafted GRE packet to a targeted device to be parsed by Snort. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-128",
"description": "Wrap-around Error",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:29.897Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-misc-dos-6mB22qAK",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK"
}
],
"source": {
"advisory": "cisco-sa-snort3-misc-dos-6mB22qAK",
"defects": [
"CSCwu51449"
],
"discovery": "EXTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20179",
"datePublished": "2026-10-21T16:12:29.897Z",
"dateReserved": "2025-10-08T11:59:15.393Z",
"dateUpdated": "2026-10-21T16:12:29.897Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20043 (GCVE-0-2026-20043)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20043 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.
Severity
9 (Critical)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Affected:
3.0.0
Affected: 3.0.2 Affected: 3.0.3 Affected: 3.0.1 Affected: 3.1.0 Affected: 3.0.4 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.2.0 Affected: 3.0.5 Affected: 3.2.1 Affected: 3.0.6 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.2.4 Affected: 4.0.0 Affected: 4.0.1 Affected: 4.0.2 Affected: 4.0.3 Affected: 4.1.0 Affected: 4.1.1 Affected: 4.1.2 Affected: 4.1.3 Affected: 4.1.4 Affected: 4.2.0 Affected: 4.2.1 Affected: 4.1.5 Affected: 4.2.2 Affected: 4.2.X Affected: 4.2.3 Affected: 4.2.4 Affected: 4.2.6 Affected: 4.1.6 Affected: 4.3.0 Affected: 4.3.1 Affected: 4.3.2 Affected: 4.3.3 Affected: 4.4.0 Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.1.7 Affected: 5.0.0 Affected: 5.0.1 Affected: 5.0.2 Affected: 5.1.0 Affected: 5.1.1 Affected: 5.1.2 Affected: 5.1.3 Affected: 5.2.0 Affected: 5.2.1 Affected: 5.3.0 Affected: 5.3.1 Affected: 5.3.2 Affected: 5.3.3 Affected: 5.5.1 Affected: 5.6.1 Affected: 5.4.0 Affected: 5.4.1 Affected: 5.4.2 Affected: 5.7.0 Affected: 5.8.1 Affected: 5.7.1 Affected: 5.8.0 Affected: 5.5.2 |
|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.3.1a
Affected: 17.3.2 Affected: 17.4.1a Affected: 17.5.1 Affected: 17.3.3 Affected: 17.5.1a Affected: 17.3.4 Affected: 17.3.4a Affected: 17.4.2 Affected: 17.4.1b Affected: 17.6.1a Affected: 17.7.1a Affected: 17.6.2 Affected: 17.8.1a Affected: 17.3.5 Affected: 17.6.3 Affected: 17.6.3a Affected: 17.7.2 Affected: 17.9.1a Affected: 17.6.4 Affected: 17.10.1a Affected: 17.3.6 Affected: 17.3.7 Affected: 17.9.2a Affected: 17.6.5 Affected: 17.11.1a Affected: 17.9.3a Affected: 17.12.1a Affected: 17.9.4 Affected: 17.6.6 Affected: 17.3.8 Affected: 17.3.8a Affected: 17.6.6a Affected: 17.9.4a Affected: 17.12.2 Affected: 17.13.1a Affected: 17.9.5a Affected: 17.12.3 Affected: 17.6.7 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.6.8 Affected: 17.9.6 Affected: 17.6.8a Affected: 17.16.1a Affected: 17.9.5e Affected: 17.12.4a Affected: 17.15.2c Affected: 17.9.5f Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.9.7a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.9.7b Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.9.8 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.9.9 Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 Affected: 17.9.10 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Cyber Vision",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.3"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.0.6"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.2.4"
},
{
"status": "affected",
"version": "4.0.0"
},
{
"status": "affected",
"version": "4.0.1"
},
{
"status": "affected",
"version": "4.0.2"
},
{
"status": "affected",
"version": "4.0.3"
},
{
"status": "affected",
"version": "4.1.0"
},
{
"status": "affected",
"version": "4.1.1"
},
{
"status": "affected",
"version": "4.1.2"
},
{
"status": "affected",
"version": "4.1.3"
},
{
"status": "affected",
"version": "4.1.4"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.2.1"
},
{
"status": "affected",
"version": "4.1.5"
},
{
"status": "affected",
"version": "4.2.2"
},
{
"status": "affected",
"version": "4.2.X"
},
{
"status": "affected",
"version": "4.2.3"
},
{
"status": "affected",
"version": "4.2.4"
},
{
"status": "affected",
"version": "4.2.6"
},
{
"status": "affected",
"version": "4.1.6"
},
{
"status": "affected",
"version": "4.3.0"
},
{
"status": "affected",
"version": "4.3.1"
},
{
"status": "affected",
"version": "4.3.2"
},
{
"status": "affected",
"version": "4.3.3"
},
{
"status": "affected",
"version": "4.4.0"
},
{
"status": "affected",
"version": "4.4.1"
},
{
"status": "affected",
"version": "4.4.2"
},
{
"status": "affected",
"version": "4.4.3"
},
{
"status": "affected",
"version": "4.1.7"
},
{
"status": "affected",
"version": "5.0.0"
},
{
"status": "affected",
"version": "5.0.1"
},
{
"status": "affected",
"version": "5.0.2"
},
{
"status": "affected",
"version": "5.1.0"
},
{
"status": "affected",
"version": "5.1.1"
},
{
"status": "affected",
"version": "5.1.2"
},
{
"status": "affected",
"version": "5.1.3"
},
{
"status": "affected",
"version": "5.2.0"
},
{
"status": "affected",
"version": "5.2.1"
},
{
"status": "affected",
"version": "5.3.0"
},
{
"status": "affected",
"version": "5.3.1"
},
{
"status": "affected",
"version": "5.3.2"
},
{
"status": "affected",
"version": "5.3.3"
},
{
"status": "affected",
"version": "5.5.1"
},
{
"status": "affected",
"version": "5.6.1"
},
{
"status": "affected",
"version": "5.4.0"
},
{
"status": "affected",
"version": "5.4.1"
},
{
"status": "affected",
"version": "5.4.2"
},
{
"status": "affected",
"version": "5.7.0"
},
{
"status": "affected",
"version": "5.8.1"
},
{
"status": "affected",
"version": "5.7.1"
},
{
"status": "affected",
"version": "5.8.0"
},
{
"status": "affected",
"version": "5.5.2"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.3.1a"
},
{
"status": "affected",
"version": "17.3.2"
},
{
"status": "affected",
"version": "17.4.1a"
},
{
"status": "affected",
"version": "17.5.1"
},
{
"status": "affected",
"version": "17.3.3"
},
{
"status": "affected",
"version": "17.5.1a"
},
{
"status": "affected",
"version": "17.3.4"
},
{
"status": "affected",
"version": "17.3.4a"
},
{
"status": "affected",
"version": "17.4.2"
},
{
"status": "affected",
"version": "17.4.1b"
},
{
"status": "affected",
"version": "17.6.1a"
},
{
"status": "affected",
"version": "17.7.1a"
},
{
"status": "affected",
"version": "17.6.2"
},
{
"status": "affected",
"version": "17.8.1a"
},
{
"status": "affected",
"version": "17.3.5"
},
{
"status": "affected",
"version": "17.6.3"
},
{
"status": "affected",
"version": "17.6.3a"
},
{
"status": "affected",
"version": "17.7.2"
},
{
"status": "affected",
"version": "17.9.1a"
},
{
"status": "affected",
"version": "17.6.4"
},
{
"status": "affected",
"version": "17.10.1a"
},
{
"status": "affected",
"version": "17.3.6"
},
{
"status": "affected",
"version": "17.3.7"
},
{
"status": "affected",
"version": "17.9.2a"
},
{
"status": "affected",
"version": "17.6.5"
},
{
"status": "affected",
"version": "17.11.1a"
},
{
"status": "affected",
"version": "17.9.3a"
},
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.9.4"
},
{
"status": "affected",
"version": "17.6.6"
},
{
"status": "affected",
"version": "17.3.8"
},
{
"status": "affected",
"version": "17.3.8a"
},
{
"status": "affected",
"version": "17.6.6a"
},
{
"status": "affected",
"version": "17.9.4a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.9.5a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.6.7"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.6.8"
},
{
"status": "affected",
"version": "17.9.6"
},
{
"status": "affected",
"version": "17.6.8a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.9.5e"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.9.5f"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.9.7a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.9.7b"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.9.8"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.9.9"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
},
{
"status": "affected",
"version": "17.9.10"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20043 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-787",
"description": "Out-of-bounds Write",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:29.730Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-hardening-snort3-ybgmhTQe",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-snort3-ybgmhTQe"
}
],
"source": {
"advisory": "cisco-sa-hardening-snort3-ybgmhTQe",
"defects": [
"CSCwu17797"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Software Hardening Release: October 2026"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20043",
"datePublished": "2026-10-21T16:12:29.730Z",
"dateReserved": "2025-10-08T11:59:15.354Z",
"dateUpdated": "2026-10-21T16:12:29.730Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20019 (GCVE-0-2026-20019)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 Netflow Denial of Service Vulnerabilities
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 NetFlow Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to incomplete error checking when Snort 3 parses UDP Netflow Protocol packets. An attacker could exploit this vulnerability by sending a single crafted Netflow packet through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition.
Severity
5.8 (Medium)
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.12.2.0
Affected: 3.1.2.0 Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.10.2.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.12.1.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.10.1.0 Affected: 3.9.1.0 Affected: 3.11.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 Affected: 7.4.7 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.12.1a
Affected: 17.12.2 Affected: 17.13.1a Affected: 17.12.3 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.16.1a Affected: 17.12.4a Affected: 17.15.2c Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.18.3a Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.12.2.0"
},
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.10.2.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.12.1.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.10.1.0"
},
{
"status": "affected",
"version": "3.9.1.0"
},
{
"status": "affected",
"version": "3.11.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
},
{
"status": "affected",
"version": "7.4.7"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.18.3a"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the Snort 3 NetFlow Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r\nThis vulnerability is due to incomplete error checking when Snort 3 parses UDP Netflow Protocol packets. An attacker could exploit this vulnerability by sending a single crafted Netflow packet through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-835",
"description": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:20.285Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-misc-dos-6mB22qAK",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK"
}
],
"source": {
"advisory": "cisco-sa-snort3-misc-dos-6mB22qAK",
"defects": [
"CSCwu23999"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 Netflow Denial of Service Vulnerabilities"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20019",
"datePublished": "2026-10-21T16:12:20.285Z",
"dateReserved": "2025-10-08T11:59:15.351Z",
"dateUpdated": "2026-10-21T16:12:20.285Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-20011 (GCVE-0-2026-20011)
Vulnerability from cvelistv5 – Published: 2026-10-21 16:12 – Updated: 2026-10-21 16:12
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 SMTP MIME Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart.
This vulnerability is due to a lack of error checking when the MIME fields of the SMTP header are parsed. An attacker could exploit this vulnerability by sending crafted SMTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine unexpectedly restarts.
Severity
5.8 (Medium)
CWE
- CWE-805 - Buffer Access with Incorrect Length Value
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Open Source Snort3 |
Affected:
3.1.2.0
Affected: 3.1.3.0 Affected: 3.1.4.0 Affected: 3.1.5.0 Affected: 3.1.6.0 Affected: 3.1.7.0 Affected: 3.1.8.0 Affected: 3.1.9.0 Affected: 3.1.10.0 Affected: 3.1.12.0 Affected: 3.1.13.0 Affected: 3.1.14.0 Affected: 3.1.15.0 Affected: 3.1.16.0 Affected: 3.1.17.0 Affected: 3.1.18.0 Affected: 3.1.19.0 Affected: 3.1.20.0 Affected: 3.1.21.0 Affected: 3.1.22.0 Affected: 3.1.23.0 Affected: 3.1.24.0 Affected: 3.1.25.0 Affected: 3.1.27.0 Affected: 3.1.28.0 Affected: 3.1.29.0 Affected: 3.1.30.0 Affected: 3.1.31.0 Affected: 3.1.32.0 Affected: 3.1.36.0 Affected: 3.1.38.0 Affected: 3.1.39.0 Affected: 3.1.40.0 Affected: 3.1.41.0 Affected: 3.1.42.0 Affected: 3.1.43.0 Affected: 3.1.45.0 Affected: 3.1.47.0 Affected: 3.1.48.0 Affected: 3.1.50.0 Affected: 3.1.51.0 Affected: 3.1.52.0 Affected: 3.1.53.0 Affected: 3.1.55.0 Affected: 3.1.56.0 Affected: 3.1.57.0 Affected: 3.1.58.0 Affected: 3.1.59.0 Affected: 3.1.60.0 Affected: 3.1.61.0 Affected: 3.1.62.0 Affected: 3.1.63.0 Affected: 3.1.64.0 Affected: 3.1.65.0 Affected: 3.1.66.0 Affected: 3.1.67.0 Affected: 3.1.69.0 Affected: 3.1.70.0 Affected: 3.1.71.0 Affected: 3.1.72.0 Affected: 3.1.73.0 Affected: 3.1.74.0 Affected: 3.1.75.0 Affected: 3.1.76.0 Affected: 3.1.77.0 Affected: 3.1.78.0 Affected: 3.1.81.0 Affected: 3.1.82.0 Affected: 3.1.83.0 Affected: 3.1.84.0 Affected: 3.2.1.0 Affected: 3.2.2.0 Affected: 3.3.0.0 Affected: 3.3.1.0 Affected: 3.3.2.0 Affected: 3.3.3.0 Affected: 3.3.4.0 Affected: 3.3.5.0 Affected: 3.3.7.0 Affected: 3.5.0.0 Affected: 3.5.1.0 Affected: 3.8.1.0 Affected: 3.6.0.0 Affected: 3.6.2.0 Affected: 3.9.3.0 Affected: 3.7.2.0 Affected: 3.7.0.0 Affected: 3.9.6.0 Affected: 3.10.0.0 Affected: 3.7.4.0 Affected: 3.9.0.0 Affected: 3.5.2.0 Affected: 3.6.1.0 Affected: 3.9.2.0 Affected: 3.6.3.0 Affected: 3.9.5.0 Affected: 3.7.1.0 Affected: 3.9.7.0 Affected: 3.7.3.0 Affected: 3.9.1.0 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.7.11 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.0.9 Affected: 7.2.11 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
3.17.1S
Affected: 16.12.3 Affected: Fuji-16.9.5 Affected: 16.12.4 Affected: 17.3.1a Affected: 16.6.6 Affected: 16.12.2 Affected: Fuji-16.9.6 Affected: 3.17.0S Affected: Fuji-16.9.3 Affected: Denali-16.3.7 Affected: Fuji-16.9.2 Affected: Fuji-16.9.4 Affected: Everest-16.6.4 Affected: Everest-16.6.3 Affected: 16.6.5 Affected: Denali-16.3.5 Affected: 17.2.1r Affected: 17.1.1 Affected: Everest-16.6.2 Affected: 16.6.7a Affected: Denali-16.3.4 Affected: 16.6.1 Affected: Denali-16.3.9 Affected: Denali-16.3.3 Affected: 16.12.1a Affected: 17.3.2 Affected: 17.4.1a Affected: 16.12.5 Affected: Fuji-16.9.7 Affected: 16.6.9 Affected: 17.3.3 Affected: 17.5.1a Affected: 17.3.4a Affected: 17.4.2 Affected: 17.4.1b Affected: 17.6.1a Affected: 16.6.10 Affected: 17.7.1a Affected: 16.12.6 Affected: Fuji-16.9.8 Affected: 17.6.2 Affected: 17.8.1a Affected: 16.12.7 Affected: 17.3.5 Affected: 17.6.3a Affected: 17.7.2 Affected: 17.9.1a Affected: 17.6.4 Affected: 17.10.1a Affected: 17.3.6 Affected: 16.12.8 Affected: 17.3.7 Affected: 17.9.2a Affected: 17.6.5 Affected: 17.11.1a Affected: 17.9.3a Affected: 17.12.1a Affected: 17.9.4 Affected: 17.6.6 Affected: 17.3.8 Affected: 17.12.2 Affected: 17.13.1a Affected: 17.9.5a Affected: 17.12.3 Affected: 17.6.7 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.9.6 Affected: 17.6.8a Affected: 17.16.1a Affected: 17.9.5e Affected: 17.12.4a Affected: 17.15.2c Affected: 17.9.5f Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.9.7a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.9.7b Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.9.8 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 Affected: 26.1.1 Affected: 17.15.5 Affected: 17.15.5a Affected: 17.12.7 Affected: 17.12.7a Affected: 17.12.7b Affected: 17.9.9 Affected: 17.12.8 Affected: 17.15.6 Affected: 17.18.4 Affected: 26.1.2 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Open Source Snort3",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.1.2.0"
},
{
"status": "affected",
"version": "3.1.3.0"
},
{
"status": "affected",
"version": "3.1.4.0"
},
{
"status": "affected",
"version": "3.1.5.0"
},
{
"status": "affected",
"version": "3.1.6.0"
},
{
"status": "affected",
"version": "3.1.7.0"
},
{
"status": "affected",
"version": "3.1.8.0"
},
{
"status": "affected",
"version": "3.1.9.0"
},
{
"status": "affected",
"version": "3.1.10.0"
},
{
"status": "affected",
"version": "3.1.12.0"
},
{
"status": "affected",
"version": "3.1.13.0"
},
{
"status": "affected",
"version": "3.1.14.0"
},
{
"status": "affected",
"version": "3.1.15.0"
},
{
"status": "affected",
"version": "3.1.16.0"
},
{
"status": "affected",
"version": "3.1.17.0"
},
{
"status": "affected",
"version": "3.1.18.0"
},
{
"status": "affected",
"version": "3.1.19.0"
},
{
"status": "affected",
"version": "3.1.20.0"
},
{
"status": "affected",
"version": "3.1.21.0"
},
{
"status": "affected",
"version": "3.1.22.0"
},
{
"status": "affected",
"version": "3.1.23.0"
},
{
"status": "affected",
"version": "3.1.24.0"
},
{
"status": "affected",
"version": "3.1.25.0"
},
{
"status": "affected",
"version": "3.1.27.0"
},
{
"status": "affected",
"version": "3.1.28.0"
},
{
"status": "affected",
"version": "3.1.29.0"
},
{
"status": "affected",
"version": "3.1.30.0"
},
{
"status": "affected",
"version": "3.1.31.0"
},
{
"status": "affected",
"version": "3.1.32.0"
},
{
"status": "affected",
"version": "3.1.36.0"
},
{
"status": "affected",
"version": "3.1.38.0"
},
{
"status": "affected",
"version": "3.1.39.0"
},
{
"status": "affected",
"version": "3.1.40.0"
},
{
"status": "affected",
"version": "3.1.41.0"
},
{
"status": "affected",
"version": "3.1.42.0"
},
{
"status": "affected",
"version": "3.1.43.0"
},
{
"status": "affected",
"version": "3.1.45.0"
},
{
"status": "affected",
"version": "3.1.47.0"
},
{
"status": "affected",
"version": "3.1.48.0"
},
{
"status": "affected",
"version": "3.1.50.0"
},
{
"status": "affected",
"version": "3.1.51.0"
},
{
"status": "affected",
"version": "3.1.52.0"
},
{
"status": "affected",
"version": "3.1.53.0"
},
{
"status": "affected",
"version": "3.1.55.0"
},
{
"status": "affected",
"version": "3.1.56.0"
},
{
"status": "affected",
"version": "3.1.57.0"
},
{
"status": "affected",
"version": "3.1.58.0"
},
{
"status": "affected",
"version": "3.1.59.0"
},
{
"status": "affected",
"version": "3.1.60.0"
},
{
"status": "affected",
"version": "3.1.61.0"
},
{
"status": "affected",
"version": "3.1.62.0"
},
{
"status": "affected",
"version": "3.1.63.0"
},
{
"status": "affected",
"version": "3.1.64.0"
},
{
"status": "affected",
"version": "3.1.65.0"
},
{
"status": "affected",
"version": "3.1.66.0"
},
{
"status": "affected",
"version": "3.1.67.0"
},
{
"status": "affected",
"version": "3.1.69.0"
},
{
"status": "affected",
"version": "3.1.70.0"
},
{
"status": "affected",
"version": "3.1.71.0"
},
{
"status": "affected",
"version": "3.1.72.0"
},
{
"status": "affected",
"version": "3.1.73.0"
},
{
"status": "affected",
"version": "3.1.74.0"
},
{
"status": "affected",
"version": "3.1.75.0"
},
{
"status": "affected",
"version": "3.1.76.0"
},
{
"status": "affected",
"version": "3.1.77.0"
},
{
"status": "affected",
"version": "3.1.78.0"
},
{
"status": "affected",
"version": "3.1.81.0"
},
{
"status": "affected",
"version": "3.1.82.0"
},
{
"status": "affected",
"version": "3.1.83.0"
},
{
"status": "affected",
"version": "3.1.84.0"
},
{
"status": "affected",
"version": "3.2.1.0"
},
{
"status": "affected",
"version": "3.2.2.0"
},
{
"status": "affected",
"version": "3.3.0.0"
},
{
"status": "affected",
"version": "3.3.1.0"
},
{
"status": "affected",
"version": "3.3.2.0"
},
{
"status": "affected",
"version": "3.3.3.0"
},
{
"status": "affected",
"version": "3.3.4.0"
},
{
"status": "affected",
"version": "3.3.5.0"
},
{
"status": "affected",
"version": "3.3.7.0"
},
{
"status": "affected",
"version": "3.5.0.0"
},
{
"status": "affected",
"version": "3.5.1.0"
},
{
"status": "affected",
"version": "3.8.1.0"
},
{
"status": "affected",
"version": "3.6.0.0"
},
{
"status": "affected",
"version": "3.6.2.0"
},
{
"status": "affected",
"version": "3.9.3.0"
},
{
"status": "affected",
"version": "3.7.2.0"
},
{
"status": "affected",
"version": "3.7.0.0"
},
{
"status": "affected",
"version": "3.9.6.0"
},
{
"status": "affected",
"version": "3.10.0.0"
},
{
"status": "affected",
"version": "3.7.4.0"
},
{
"status": "affected",
"version": "3.9.0.0"
},
{
"status": "affected",
"version": "3.5.2.0"
},
{
"status": "affected",
"version": "3.6.1.0"
},
{
"status": "affected",
"version": "3.9.2.0"
},
{
"status": "affected",
"version": "3.6.3.0"
},
{
"status": "affected",
"version": "3.9.5.0"
},
{
"status": "affected",
"version": "3.7.1.0"
},
{
"status": "affected",
"version": "3.9.7.0"
},
{
"status": "affected",
"version": "3.7.3.0"
},
{
"status": "affected",
"version": "3.9.1.0"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
},
{
"status": "affected",
"version": "7.2.10"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.4.2.3"
},
{
"status": "affected",
"version": "7.0.8"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.11"
},
{
"status": "affected",
"version": "7.0.8.1"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.10.1"
},
{
"status": "affected",
"version": "7.4.2.4"
},
{
"status": "affected",
"version": "7.2.10.2"
},
{
"status": "affected",
"version": "7.4.3"
},
{
"status": "affected",
"version": "7.6.4"
},
{
"status": "affected",
"version": "10.0.0"
},
{
"status": "affected",
"version": "7.4.4"
},
{
"status": "affected",
"version": "7.0.9"
},
{
"status": "affected",
"version": "7.2.11"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.17.1S"
},
{
"status": "affected",
"version": "16.12.3"
},
{
"status": "affected",
"version": "Fuji-16.9.5"
},
{
"status": "affected",
"version": "16.12.4"
},
{
"status": "affected",
"version": "17.3.1a"
},
{
"status": "affected",
"version": "16.6.6"
},
{
"status": "affected",
"version": "16.12.2"
},
{
"status": "affected",
"version": "Fuji-16.9.6"
},
{
"status": "affected",
"version": "3.17.0S"
},
{
"status": "affected",
"version": "Fuji-16.9.3"
},
{
"status": "affected",
"version": "Denali-16.3.7"
},
{
"status": "affected",
"version": "Fuji-16.9.2"
},
{
"status": "affected",
"version": "Fuji-16.9.4"
},
{
"status": "affected",
"version": "Everest-16.6.4"
},
{
"status": "affected",
"version": "Everest-16.6.3"
},
{
"status": "affected",
"version": "16.6.5"
},
{
"status": "affected",
"version": "Denali-16.3.5"
},
{
"status": "affected",
"version": "17.2.1r"
},
{
"status": "affected",
"version": "17.1.1"
},
{
"status": "affected",
"version": "Everest-16.6.2"
},
{
"status": "affected",
"version": "16.6.7a"
},
{
"status": "affected",
"version": "Denali-16.3.4"
},
{
"status": "affected",
"version": "16.6.1"
},
{
"status": "affected",
"version": "Denali-16.3.9"
},
{
"status": "affected",
"version": "Denali-16.3.3"
},
{
"status": "affected",
"version": "16.12.1a"
},
{
"status": "affected",
"version": "17.3.2"
},
{
"status": "affected",
"version": "17.4.1a"
},
{
"status": "affected",
"version": "16.12.5"
},
{
"status": "affected",
"version": "Fuji-16.9.7"
},
{
"status": "affected",
"version": "16.6.9"
},
{
"status": "affected",
"version": "17.3.3"
},
{
"status": "affected",
"version": "17.5.1a"
},
{
"status": "affected",
"version": "17.3.4a"
},
{
"status": "affected",
"version": "17.4.2"
},
{
"status": "affected",
"version": "17.4.1b"
},
{
"status": "affected",
"version": "17.6.1a"
},
{
"status": "affected",
"version": "16.6.10"
},
{
"status": "affected",
"version": "17.7.1a"
},
{
"status": "affected",
"version": "16.12.6"
},
{
"status": "affected",
"version": "Fuji-16.9.8"
},
{
"status": "affected",
"version": "17.6.2"
},
{
"status": "affected",
"version": "17.8.1a"
},
{
"status": "affected",
"version": "16.12.7"
},
{
"status": "affected",
"version": "17.3.5"
},
{
"status": "affected",
"version": "17.6.3a"
},
{
"status": "affected",
"version": "17.7.2"
},
{
"status": "affected",
"version": "17.9.1a"
},
{
"status": "affected",
"version": "17.6.4"
},
{
"status": "affected",
"version": "17.10.1a"
},
{
"status": "affected",
"version": "17.3.6"
},
{
"status": "affected",
"version": "16.12.8"
},
{
"status": "affected",
"version": "17.3.7"
},
{
"status": "affected",
"version": "17.9.2a"
},
{
"status": "affected",
"version": "17.6.5"
},
{
"status": "affected",
"version": "17.11.1a"
},
{
"status": "affected",
"version": "17.9.3a"
},
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.9.4"
},
{
"status": "affected",
"version": "17.6.6"
},
{
"status": "affected",
"version": "17.3.8"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.9.5a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.6.7"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.9.6"
},
{
"status": "affected",
"version": "17.6.8a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.9.5e"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.9.5f"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.9.7a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.9.7b"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.9.8"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "17.15.5"
},
{
"status": "affected",
"version": "17.15.5a"
},
{
"status": "affected",
"version": "17.12.7"
},
{
"status": "affected",
"version": "17.12.7a"
},
{
"status": "affected",
"version": "17.12.7b"
},
{
"status": "affected",
"version": "17.9.9"
},
{
"status": "affected",
"version": "17.12.8"
},
{
"status": "affected",
"version": "17.15.6"
},
{
"status": "affected",
"version": "17.18.4"
},
{
"status": "affected",
"version": "26.1.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the Snort 3 SMTP MIME Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart.\r\n\r\nThis vulnerability is due to a lack of error checking when the MIME fields of the SMTP header are parsed. An attacker could exploit this vulnerability by sending crafted SMTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine unexpectedly restarts."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-805",
"description": "Buffer Access with Incorrect Length Value",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T16:12:19.429Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-mime-vulns-bkXjcKkt",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-mime-vulns-bkXjcKkt"
}
],
"source": {
"advisory": "cisco-sa-snort3-mime-vulns-bkXjcKkt",
"defects": [
"CSCws62055"
],
"discovery": "INTERNAL"
},
"title": "Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20011",
"datePublished": "2026-10-21T16:12:19.429Z",
"dateReserved": "2025-10-08T11:59:15.350Z",
"dateUpdated": "2026-10-21T16:12:19.429Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}