Action not permitted
Modal body text goes here.
Modal Title
Modal Body
GHSA-PCM4-9FQW-4W8H
Vulnerability from github – Published: 2026-03-04 18:31 – Updated: 2026-03-04 18:31
VLAI?
Details
Multiple Cisco products are affected by a vulnerability in the Snort 3 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 parsing of the SSL handshake ingress packets. An attacker could exploit this vulnerability by sending crafted SSL handshake packets. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine restarts unexpectedly.
Severity ?
5.8 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-20005"
],
"database_specific": {
"cwe_ids": [
"CWE-392"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-04T17:16:18Z",
"severity": "MODERATE"
},
"details": "Multiple Cisco products are affected by a vulnerability in the Snort 3 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.\n\n This vulnerability is due to incomplete parsing of the SSL handshake ingress packets. An attacker could exploit this vulnerability by sending crafted SSL handshake packets. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine restarts unexpectedly.",
"id": "GHSA-pcm4-9fqw-4w8h",
"modified": "2026-03-04T18:31:53Z",
"published": "2026-03-04T18:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20005"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-multi-dos-XFWkWSwz"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
CVE-2026-20005 (GCVE-0-2026-20005)
Vulnerability from cvelistv5 – Published: 2026-03-04 17:02 – Updated: 2026-03-04 18:04
VLAI?
EPSS
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 Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to incomplete parsing of the SSL handshake ingress packets. An attacker could exploit this vulnerability by sending crafted SSL handshake packets. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine restarts unexpectedly.
Severity ?
5.8 (Medium)
CWE
- CWE-392 - Missing Report of Error Condition
Assigner
References
Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.6.0
Affected: 7.6.1 Affected: 7.6.2 Affected: 7.6.2.1 Affected: 7.7.0 Affected: 7.7.10 Affected: 7.7.10.1 |
||||||||||||
|
||||||||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-20005",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-04T17:18:34.575633Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-04T18:04:14.731Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.6.2.1"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.7.10"
},
{
"status": "affected",
"version": "7.7.10.1"
}
]
},
{
"product": "Cisco Cyber Vision",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.3"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.0.6"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.2.4"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"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": "4.1.5"
},
{
"status": "affected",
"version": "4.1.6"
},
{
"status": "affected",
"version": "4.1.7"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.2.1"
},
{
"status": "affected",
"version": "4.2.4"
},
{
"status": "affected",
"version": "4.2.6"
},
{
"status": "affected",
"version": "4.2.2"
},
{
"status": "affected",
"version": "4.2.3"
},
{
"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": "5.0.0"
},
{
"status": "affected",
"version": "5.0.1"
},
{
"status": "affected",
"version": "5.0.2"
},
{
"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"
}
]
},
{
"product": "Cisco UTD SNORT IPS Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.2.1r"
},
{
"status": "affected",
"version": "17.3.1a"
},
{
"status": "affected",
"version": "17.3.2"
},
{
"status": "affected",
"version": "17.3.3"
},
{
"status": "affected",
"version": "17.3.4a"
},
{
"status": "affected",
"version": "17.3.6"
},
{
"status": "affected",
"version": "17.3.5"
},
{
"status": "affected",
"version": "17.3.7"
},
{
"status": "affected",
"version": "17.3.8"
},
{
"status": "affected",
"version": "17.4.1a"
},
{
"status": "affected",
"version": "17.4.2"
},
{
"status": "affected",
"version": "17.4.1b"
},
{
"status": "affected",
"version": "17.5.1a"
},
{
"status": "affected",
"version": "17.6.1a"
},
{
"status": "affected",
"version": "17.6.2"
},
{
"status": "affected",
"version": "17.6.3a"
},
{
"status": "affected",
"version": "17.6.4"
},
{
"status": "affected",
"version": "17.6.5"
},
{
"status": "affected",
"version": "17.6.6"
},
{
"status": "affected",
"version": "17.6.7"
},
{
"status": "affected",
"version": "17.6.8a"
},
{
"status": "affected",
"version": "17.7.1a"
},
{
"status": "affected",
"version": "17.7.2"
},
{
"status": "affected",
"version": "17.10.1a"
},
{
"status": "affected",
"version": "17.9.1a"
},
{
"status": "affected",
"version": "17.9.2a"
},
{
"status": "affected",
"version": "17.9.3a"
},
{
"status": "affected",
"version": "17.9.4"
},
{
"status": "affected",
"version": "17.9.5a"
},
{
"status": "affected",
"version": "17.9.6"
},
{
"status": "affected",
"version": "17.9.5e"
},
{
"status": "affected",
"version": "17.9.5f"
},
{
"status": "affected",
"version": "17.9.7a"
},
{
"status": "affected",
"version": "17.9.8"
},
{
"status": "affected",
"version": "17.9.7b"
},
{
"status": "affected",
"version": "17.8.1a"
},
{
"status": "affected",
"version": "17.11.1a"
},
{
"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": "17.12.4a"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.18.2"
}
]
}
],
"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 Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r This vulnerability is due to incomplete parsing of the SSL handshake ingress packets. An attacker could exploit this vulnerability by sending crafted SSL handshake packets. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine restarts unexpectedly."
}
],
"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-392",
"description": "Missing Report of Error Condition",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-04T17:31:57.391Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-multi-dos-XFWkWSwz",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-multi-dos-XFWkWSwz"
}
],
"source": {
"advisory": "cisco-sa-snort3-multi-dos-XFWkWSwz",
"defects": [
"CSCwo93207",
"CSCwn65473",
"CSCwp99280",
"CSCwo93208"
],
"discovery": "EXTERNAL"
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20005",
"datePublished": "2026-03-04T17:02:45.919Z",
"dateReserved": "2025-10-08T11:59:15.349Z",
"dateUpdated": "2026-03-04T18:04:14.731Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Show additional events:
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…