CVE-2026-20124 (GCVE-0-2026-20124)
Vulnerability from cvelistv5 – Published: 2026-08-05 16:18 – Updated: 2026-08-05 17:20
VLAI
EPSS
VEX
Title
Cisco IOS XE Software SNMP Denial of Service Vulnerability
Summary
A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition.
This vulnerability is due to improper error handling when parsing SNMP requests. This vulnerability affects all versions of SNMP — Versions 1, 2c, and 3. An attacker could exploit this vulnerability by sending a malformed SNMP request to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly. The attacker must have the SNMPv1 or v2c read-only or read-write community string or valid SNMPv3 user credentials on the affected device.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco IOS XE Software |
Affected:
17.2.1a
Affected: 3.18.7SP Affected: 16.12.1y Affected: 16.12.3s Affected: 16.7.1b Affected: 16.6.2 Affected: 16.6.5 Affected: 16.12.1w Affected: 3.18.4S Affected: 16.9.1d Affected: 17.3.1 Affected: 16.9.4c Affected: 16.7.1 Affected: 17.2.1 Affected: 16.6.8 Affected: 16.9.1b Affected: 3.16.8S Affected: 16.9.2s Affected: 16.12.4 Affected: 16.12.3a Affected: 17.1.1s Affected: 16.11.1a Affected: 16.7.2 Affected: 16.11.1b Affected: 16.9.1s Affected: 16.9.3h Affected: 16.9.1c Affected: 16.6.5a Affected: 16.6.3 Affected: 16.10.1f Affected: 17.2.1v Affected: 16.8.1e Affected: 16.9.3a Affected: 16.12.1a Affected: 16.12.1x Affected: 3.16.10aS Affected: 16.6.4s Affected: 16.10.1c Affected: 16.12.3 Affected: 16.11.2 Affected: 16.6.5b Affected: 16.12.2s Affected: 16.10.1b Affected: 16.7.3 Affected: 16.6.7 Affected: 16.9.6 Affected: 16.9.2 Affected: 3.16.10S Affected: 16.10.1 Affected: 16.12.1t Affected: 3.18.3bSP Affected: 3.13.9S Affected: 3.18.3aSP Affected: 3.18.5SP Affected: 16.9.1 Affected: 16.8.1a Affected: 3.18.8aSP Affected: 16.9.3s Affected: 16.6.7a Affected: 16.12.2 Affected: 16.11.1 Affected: 16.9.3 Affected: 16.11.1s Affected: 16.12.1 Affected: 3.16.9S Affected: 17.1.1 Affected: 17.1.2 Affected: 16.10.1d Affected: 17.1.1t Affected: 16.9.4 Affected: 16.8.3 Affected: 16.12.2t Affected: 16.9.5 Affected: 3.16.7S Affected: 16.8.1s Affected: 16.10.1e Affected: 16.8.2 Affected: 16.6.4 Affected: 16.8.1b Affected: 16.10.1a Affected: 16.12.1z Affected: 16.8.1c Affected: 16.9.1a Affected: 3.16.7aS Affected: 16.9.5f Affected: 16.6.4a Affected: 16.10.1g Affected: 3.13.10S Affected: 16.8.1 Affected: 16.6.6 Affected: 16.9.2a Affected: 16.8.1d Affected: 16.10.3 Affected: 3.18.4SP Affected: 3.18.6SP Affected: 3.18.3SP Affected: 16.7.1a Affected: 16.11.1c Affected: 16.10.1s Affected: 17.2.1r Affected: 3.16.7bS Affected: 17.1.1a Affected: 16.10.2 Affected: 16.12.2a Affected: 3.16.6bS Affected: 16.12.1c Affected: 16.12.1s Affected: 16.7.4 Affected: 3.18.9SP Affected: 17.2.2 Affected: 16.9.8 Affected: 16.9.7 Affected: 17.1.3 Affected: 17.3.1a Affected: 17.3.2a Affected: 16.12.5 Affected: 17.3.1w Affected: 17.3.2 Affected: 17.4.1 Affected: 16.12.4a Affected: 17.4.1a Affected: 3.16.10bS Affected: 17.3.1x Affected: 17.3.3 Affected: 16.6.9 Affected: 17.2.3 Affected: 17.5.1 Affected: 16.12.1z1 Affected: 16.12.5a Affected: 17.4.1b Affected: 17.3.1z Affected: 16.12.5b Affected: 17.4.2 Affected: 17.3.3a Affected: 17.3.5 Affected: 17.3.4 Affected: 17.5.1a Affected: 16.12.6 Affected: 17.6.1 Affected: 16.12.1z2 Affected: 16.6.10 Affected: 17.3.4a Affected: 17.6.1a Affected: 17.7.1 Affected: 17.6.1x Affected: 17.6.2 Affected: 16.12.6a Affected: 17.3.4c Affected: 17.4.2a Affected: 17.3.4b Affected: 17.7.1a Affected: 16.12.7 Affected: 17.8.1a Affected: 17.6.3a Affected: 17.6.3 Affected: 17.7.2 Affected: 17.7.1b Affected: 17.9.1w Affected: 17.3.5a Affected: 17.6.1z Affected: 16.12.8 Affected: 17.8.1 Affected: 17.9.1 Affected: 17.6.4 Affected: 17.3.5b Affected: 17.9.1a Affected: 17.3.6 Affected: 17.10.1 Affected: 16.9.8a Affected: 17.6.1z1 Affected: 17.10.1a Affected: 17.9.2 Affected: 17.6.5 Affected: 17.9.1x Affected: 17.9.1y Affected: 16.9.8b Affected: 17.3.7 Affected: 17.9.2a Affected: 17.9.3 Affected: 16.12.9 Affected: 17.11.1 Affected: 17.10.1b Affected: 17.6.6 Affected: 17.9.1x1 Affected: 17.11.1a Affected: 17.9.3a Affected: 17.12.1 Affected: 17.3.8 Affected: 17.9.4 Affected: 16.12.10 Affected: 17.12.1w Affected: 17.9.1y1 Affected: 17.12.1a Affected: 17.9.5 Affected: 17.13.1 Affected: 17.12.1x Affected: 17.12.2 Affected: 17.14.1 Affected: 17.9.4a Affected: 17.3.8a Affected: 17.6.6a Affected: 17.6.5a Affected: 17.6.7 Affected: 16.12.10a Affected: 17.15.1 Affected: 17.13.1a Affected: 17.12.2a Affected: 16.12.11 Affected: 17.12.3 Affected: 17.12.1y Affected: 17.12.1z Affected: 17.9.5a Affected: 17.14.1a Affected: 17.9.5b Affected: 17.6.8 Affected: 16.12.12 Affected: 17.12.4 Affected: 17.9.6 Affected: 17.17.1 Affected: 17.16.1 Affected: 17.15.1w Affected: 17.12.3a Affected: 17.9.5c Affected: 17.15.1a Affected: 17.12.1z1 Affected: 17.15.2 Affected: 17.15.1b Affected: 17.9.5d Affected: 17.15.1x Affected: 17.9.6a Affected: 17.12.1z2 Affected: 17.6.8a Affected: 17.16.1a Affected: 16.12.13 Affected: 17.15.3 Affected: 17.9.7 Affected: 17.12.5 Affected: 17.15.1y Affected: 17.9.5e Affected: 17.12.4a Affected: 17.15.2a Affected: 17.15.2c Affected: 17.15.2b Affected: 17.12.1z3 Affected: 17.9.5f Affected: 17.12.4b Affected: 17.12.5a Affected: 17.18.1 Affected: 17.12.6 Affected: 17.12.1z4 Affected: 17.9.8 Affected: 17.9.7a Affected: 17.15.3a Affected: 17.15.4 Affected: 17.12.5b Affected: 17.15.3b Affected: 16.12.14 Affected: 17.9.7b Affected: 17.12.5c Affected: 17.18.1a Affected: 17.15.4a Affected: 17.18.2 Affected: 17.18.1w Affected: 17.15.4b Affected: 17.12.6a Affected: 17.15.4c Affected: 17.9.9 Affected: 17.12.5d Affected: 16.12.15 Affected: 17.15.4s1 Affected: 17.12.1z5 Affected: 17.18.1x Affected: 17.12.1z6 Affected: 17.15.4d Affected: 17.12.6b Affected: 17.4.1c Affected: 17.18.1y |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-20124",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-05T17:20:40.573517Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T17:20:47.421Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco IOS XE Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "17.2.1a"
},
{
"status": "affected",
"version": "3.18.7SP"
},
{
"status": "affected",
"version": "16.12.1y"
},
{
"status": "affected",
"version": "16.12.3s"
},
{
"status": "affected",
"version": "16.7.1b"
},
{
"status": "affected",
"version": "16.6.2"
},
{
"status": "affected",
"version": "16.6.5"
},
{
"status": "affected",
"version": "16.12.1w"
},
{
"status": "affected",
"version": "3.18.4S"
},
{
"status": "affected",
"version": "16.9.1d"
},
{
"status": "affected",
"version": "17.3.1"
},
{
"status": "affected",
"version": "16.9.4c"
},
{
"status": "affected",
"version": "16.7.1"
},
{
"status": "affected",
"version": "17.2.1"
},
{
"status": "affected",
"version": "16.6.8"
},
{
"status": "affected",
"version": "16.9.1b"
},
{
"status": "affected",
"version": "3.16.8S"
},
{
"status": "affected",
"version": "16.9.2s"
},
{
"status": "affected",
"version": "16.12.4"
},
{
"status": "affected",
"version": "16.12.3a"
},
{
"status": "affected",
"version": "17.1.1s"
},
{
"status": "affected",
"version": "16.11.1a"
},
{
"status": "affected",
"version": "16.7.2"
},
{
"status": "affected",
"version": "16.11.1b"
},
{
"status": "affected",
"version": "16.9.1s"
},
{
"status": "affected",
"version": "16.9.3h"
},
{
"status": "affected",
"version": "16.9.1c"
},
{
"status": "affected",
"version": "16.6.5a"
},
{
"status": "affected",
"version": "16.6.3"
},
{
"status": "affected",
"version": "16.10.1f"
},
{
"status": "affected",
"version": "17.2.1v"
},
{
"status": "affected",
"version": "16.8.1e"
},
{
"status": "affected",
"version": "16.9.3a"
},
{
"status": "affected",
"version": "16.12.1a"
},
{
"status": "affected",
"version": "16.12.1x"
},
{
"status": "affected",
"version": "3.16.10aS"
},
{
"status": "affected",
"version": "16.6.4s"
},
{
"status": "affected",
"version": "16.10.1c"
},
{
"status": "affected",
"version": "16.12.3"
},
{
"status": "affected",
"version": "16.11.2"
},
{
"status": "affected",
"version": "16.6.5b"
},
{
"status": "affected",
"version": "16.12.2s"
},
{
"status": "affected",
"version": "16.10.1b"
},
{
"status": "affected",
"version": "16.7.3"
},
{
"status": "affected",
"version": "16.6.7"
},
{
"status": "affected",
"version": "16.9.6"
},
{
"status": "affected",
"version": "16.9.2"
},
{
"status": "affected",
"version": "3.16.10S"
},
{
"status": "affected",
"version": "16.10.1"
},
{
"status": "affected",
"version": "16.12.1t"
},
{
"status": "affected",
"version": "3.18.3bSP"
},
{
"status": "affected",
"version": "3.13.9S"
},
{
"status": "affected",
"version": "3.18.3aSP"
},
{
"status": "affected",
"version": "3.18.5SP"
},
{
"status": "affected",
"version": "16.9.1"
},
{
"status": "affected",
"version": "16.8.1a"
},
{
"status": "affected",
"version": "3.18.8aSP"
},
{
"status": "affected",
"version": "16.9.3s"
},
{
"status": "affected",
"version": "16.6.7a"
},
{
"status": "affected",
"version": "16.12.2"
},
{
"status": "affected",
"version": "16.11.1"
},
{
"status": "affected",
"version": "16.9.3"
},
{
"status": "affected",
"version": "16.11.1s"
},
{
"status": "affected",
"version": "16.12.1"
},
{
"status": "affected",
"version": "3.16.9S"
},
{
"status": "affected",
"version": "17.1.1"
},
{
"status": "affected",
"version": "17.1.2"
},
{
"status": "affected",
"version": "16.10.1d"
},
{
"status": "affected",
"version": "17.1.1t"
},
{
"status": "affected",
"version": "16.9.4"
},
{
"status": "affected",
"version": "16.8.3"
},
{
"status": "affected",
"version": "16.12.2t"
},
{
"status": "affected",
"version": "16.9.5"
},
{
"status": "affected",
"version": "3.16.7S"
},
{
"status": "affected",
"version": "16.8.1s"
},
{
"status": "affected",
"version": "16.10.1e"
},
{
"status": "affected",
"version": "16.8.2"
},
{
"status": "affected",
"version": "16.6.4"
},
{
"status": "affected",
"version": "16.8.1b"
},
{
"status": "affected",
"version": "16.10.1a"
},
{
"status": "affected",
"version": "16.12.1z"
},
{
"status": "affected",
"version": "16.8.1c"
},
{
"status": "affected",
"version": "16.9.1a"
},
{
"status": "affected",
"version": "3.16.7aS"
},
{
"status": "affected",
"version": "16.9.5f"
},
{
"status": "affected",
"version": "16.6.4a"
},
{
"status": "affected",
"version": "16.10.1g"
},
{
"status": "affected",
"version": "3.13.10S"
},
{
"status": "affected",
"version": "16.8.1"
},
{
"status": "affected",
"version": "16.6.6"
},
{
"status": "affected",
"version": "16.9.2a"
},
{
"status": "affected",
"version": "16.8.1d"
},
{
"status": "affected",
"version": "16.10.3"
},
{
"status": "affected",
"version": "3.18.4SP"
},
{
"status": "affected",
"version": "3.18.6SP"
},
{
"status": "affected",
"version": "3.18.3SP"
},
{
"status": "affected",
"version": "16.7.1a"
},
{
"status": "affected",
"version": "16.11.1c"
},
{
"status": "affected",
"version": "16.10.1s"
},
{
"status": "affected",
"version": "17.2.1r"
},
{
"status": "affected",
"version": "3.16.7bS"
},
{
"status": "affected",
"version": "17.1.1a"
},
{
"status": "affected",
"version": "16.10.2"
},
{
"status": "affected",
"version": "16.12.2a"
},
{
"status": "affected",
"version": "3.16.6bS"
},
{
"status": "affected",
"version": "16.12.1c"
},
{
"status": "affected",
"version": "16.12.1s"
},
{
"status": "affected",
"version": "16.7.4"
},
{
"status": "affected",
"version": "3.18.9SP"
},
{
"status": "affected",
"version": "17.2.2"
},
{
"status": "affected",
"version": "16.9.8"
},
{
"status": "affected",
"version": "16.9.7"
},
{
"status": "affected",
"version": "17.1.3"
},
{
"status": "affected",
"version": "17.3.1a"
},
{
"status": "affected",
"version": "17.3.2a"
},
{
"status": "affected",
"version": "16.12.5"
},
{
"status": "affected",
"version": "17.3.1w"
},
{
"status": "affected",
"version": "17.3.2"
},
{
"status": "affected",
"version": "17.4.1"
},
{
"status": "affected",
"version": "16.12.4a"
},
{
"status": "affected",
"version": "17.4.1a"
},
{
"status": "affected",
"version": "3.16.10bS"
},
{
"status": "affected",
"version": "17.3.1x"
},
{
"status": "affected",
"version": "17.3.3"
},
{
"status": "affected",
"version": "16.6.9"
},
{
"status": "affected",
"version": "17.2.3"
},
{
"status": "affected",
"version": "17.5.1"
},
{
"status": "affected",
"version": "16.12.1z1"
},
{
"status": "affected",
"version": "16.12.5a"
},
{
"status": "affected",
"version": "17.4.1b"
},
{
"status": "affected",
"version": "17.3.1z"
},
{
"status": "affected",
"version": "16.12.5b"
},
{
"status": "affected",
"version": "17.4.2"
},
{
"status": "affected",
"version": "17.3.3a"
},
{
"status": "affected",
"version": "17.3.5"
},
{
"status": "affected",
"version": "17.3.4"
},
{
"status": "affected",
"version": "17.5.1a"
},
{
"status": "affected",
"version": "16.12.6"
},
{
"status": "affected",
"version": "17.6.1"
},
{
"status": "affected",
"version": "16.12.1z2"
},
{
"status": "affected",
"version": "16.6.10"
},
{
"status": "affected",
"version": "17.3.4a"
},
{
"status": "affected",
"version": "17.6.1a"
},
{
"status": "affected",
"version": "17.7.1"
},
{
"status": "affected",
"version": "17.6.1x"
},
{
"status": "affected",
"version": "17.6.2"
},
{
"status": "affected",
"version": "16.12.6a"
},
{
"status": "affected",
"version": "17.3.4c"
},
{
"status": "affected",
"version": "17.4.2a"
},
{
"status": "affected",
"version": "17.3.4b"
},
{
"status": "affected",
"version": "17.7.1a"
},
{
"status": "affected",
"version": "16.12.7"
},
{
"status": "affected",
"version": "17.8.1a"
},
{
"status": "affected",
"version": "17.6.3a"
},
{
"status": "affected",
"version": "17.6.3"
},
{
"status": "affected",
"version": "17.7.2"
},
{
"status": "affected",
"version": "17.7.1b"
},
{
"status": "affected",
"version": "17.9.1w"
},
{
"status": "affected",
"version": "17.3.5a"
},
{
"status": "affected",
"version": "17.6.1z"
},
{
"status": "affected",
"version": "16.12.8"
},
{
"status": "affected",
"version": "17.8.1"
},
{
"status": "affected",
"version": "17.9.1"
},
{
"status": "affected",
"version": "17.6.4"
},
{
"status": "affected",
"version": "17.3.5b"
},
{
"status": "affected",
"version": "17.9.1a"
},
{
"status": "affected",
"version": "17.3.6"
},
{
"status": "affected",
"version": "17.10.1"
},
{
"status": "affected",
"version": "16.9.8a"
},
{
"status": "affected",
"version": "17.6.1z1"
},
{
"status": "affected",
"version": "17.10.1a"
},
{
"status": "affected",
"version": "17.9.2"
},
{
"status": "affected",
"version": "17.6.5"
},
{
"status": "affected",
"version": "17.9.1x"
},
{
"status": "affected",
"version": "17.9.1y"
},
{
"status": "affected",
"version": "16.9.8b"
},
{
"status": "affected",
"version": "17.3.7"
},
{
"status": "affected",
"version": "17.9.2a"
},
{
"status": "affected",
"version": "17.9.3"
},
{
"status": "affected",
"version": "16.12.9"
},
{
"status": "affected",
"version": "17.11.1"
},
{
"status": "affected",
"version": "17.10.1b"
},
{
"status": "affected",
"version": "17.6.6"
},
{
"status": "affected",
"version": "17.9.1x1"
},
{
"status": "affected",
"version": "17.11.1a"
},
{
"status": "affected",
"version": "17.9.3a"
},
{
"status": "affected",
"version": "17.12.1"
},
{
"status": "affected",
"version": "17.3.8"
},
{
"status": "affected",
"version": "17.9.4"
},
{
"status": "affected",
"version": "16.12.10"
},
{
"status": "affected",
"version": "17.12.1w"
},
{
"status": "affected",
"version": "17.9.1y1"
},
{
"status": "affected",
"version": "17.12.1a"
},
{
"status": "affected",
"version": "17.9.5"
},
{
"status": "affected",
"version": "17.13.1"
},
{
"status": "affected",
"version": "17.12.1x"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.14.1"
},
{
"status": "affected",
"version": "17.9.4a"
},
{
"status": "affected",
"version": "17.3.8a"
},
{
"status": "affected",
"version": "17.6.6a"
},
{
"status": "affected",
"version": "17.6.5a"
},
{
"status": "affected",
"version": "17.6.7"
},
{
"status": "affected",
"version": "16.12.10a"
},
{
"status": "affected",
"version": "17.15.1"
},
{
"status": "affected",
"version": "17.13.1a"
},
{
"status": "affected",
"version": "17.12.2a"
},
{
"status": "affected",
"version": "16.12.11"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.12.1y"
},
{
"status": "affected",
"version": "17.12.1z"
},
{
"status": "affected",
"version": "17.9.5a"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
"status": "affected",
"version": "17.9.5b"
},
{
"status": "affected",
"version": "17.6.8"
},
{
"status": "affected",
"version": "16.12.12"
},
{
"status": "affected",
"version": "17.12.4"
},
{
"status": "affected",
"version": "17.9.6"
},
{
"status": "affected",
"version": "17.17.1"
},
{
"status": "affected",
"version": "17.16.1"
},
{
"status": "affected",
"version": "17.15.1w"
},
{
"status": "affected",
"version": "17.12.3a"
},
{
"status": "affected",
"version": "17.9.5c"
},
{
"status": "affected",
"version": "17.15.1a"
},
{
"status": "affected",
"version": "17.12.1z1"
},
{
"status": "affected",
"version": "17.15.2"
},
{
"status": "affected",
"version": "17.15.1b"
},
{
"status": "affected",
"version": "17.9.5d"
},
{
"status": "affected",
"version": "17.15.1x"
},
{
"status": "affected",
"version": "17.9.6a"
},
{
"status": "affected",
"version": "17.12.1z2"
},
{
"status": "affected",
"version": "17.6.8a"
},
{
"status": "affected",
"version": "17.16.1a"
},
{
"status": "affected",
"version": "16.12.13"
},
{
"status": "affected",
"version": "17.15.3"
},
{
"status": "affected",
"version": "17.9.7"
},
{
"status": "affected",
"version": "17.12.5"
},
{
"status": "affected",
"version": "17.15.1y"
},
{
"status": "affected",
"version": "17.9.5e"
},
{
"status": "affected",
"version": "17.12.4a"
},
{
"status": "affected",
"version": "17.15.2a"
},
{
"status": "affected",
"version": "17.15.2c"
},
{
"status": "affected",
"version": "17.15.2b"
},
{
"status": "affected",
"version": "17.12.1z3"
},
{
"status": "affected",
"version": "17.9.5f"
},
{
"status": "affected",
"version": "17.12.4b"
},
{
"status": "affected",
"version": "17.12.5a"
},
{
"status": "affected",
"version": "17.18.1"
},
{
"status": "affected",
"version": "17.12.6"
},
{
"status": "affected",
"version": "17.12.1z4"
},
{
"status": "affected",
"version": "17.9.8"
},
{
"status": "affected",
"version": "17.9.7a"
},
{
"status": "affected",
"version": "17.15.3a"
},
{
"status": "affected",
"version": "17.15.4"
},
{
"status": "affected",
"version": "17.12.5b"
},
{
"status": "affected",
"version": "17.15.3b"
},
{
"status": "affected",
"version": "16.12.14"
},
{
"status": "affected",
"version": "17.9.7b"
},
{
"status": "affected",
"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.18.1a"
},
{
"status": "affected",
"version": "17.15.4a"
},
{
"status": "affected",
"version": "17.18.2"
},
{
"status": "affected",
"version": "17.18.1w"
},
{
"status": "affected",
"version": "17.15.4b"
},
{
"status": "affected",
"version": "17.12.6a"
},
{
"status": "affected",
"version": "17.15.4c"
},
{
"status": "affected",
"version": "17.9.9"
},
{
"status": "affected",
"version": "17.12.5d"
},
{
"status": "affected",
"version": "16.12.15"
},
{
"status": "affected",
"version": "17.15.4s1"
},
{
"status": "affected",
"version": "17.12.1z5"
},
{
"status": "affected",
"version": "17.18.1x"
},
{
"status": "affected",
"version": "17.12.1z6"
},
{
"status": "affected",
"version": "17.15.4d"
},
{
"status": "affected",
"version": "17.12.6b"
},
{
"status": "affected",
"version": "17.4.1c"
},
{
"status": "affected",
"version": "17.18.1y"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to improper error handling when parsing SNMP requests. This vulnerability affects all versions of SNMP \u0026mdash; Versions 1, 2c, and 3. An attacker could exploit this vulnerability by sending a malformed SNMP request to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly. The attacker must have the SNMPv1 or v2c read-only or read-write community string or valid SNMPv3 user credentials on the affected device."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco Product Security Incident Response Team (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": "HIGH",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-772",
"description": "Missing Release of Resource after Effective Lifetime",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T16:18:21.590Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-iosxe-snmp-dos-ZAqNm4MD",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-snmp-dos-ZAqNm4MD"
}
],
"source": {
"advisory": "cisco-sa-iosxe-snmp-dos-ZAqNm4MD",
"defects": [
"CSCws90638"
],
"discovery": "EXTERNAL"
},
"title": "Cisco IOS XE Software SNMP Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20124",
"datePublished": "2026-08-05T16:18:21.590Z",
"dateReserved": "2025-10-08T11:59:15.378Z",
"dateUpdated": "2026-08-05T17:20:47.421Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-20124",
"date": "2026-08-06",
"epss": "0.00345",
"percentile": "0.27136"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20124\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-05T17:20:40.573517Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-05T17:20:43.437Z\"}}], \"cna\": {\"title\": \"Cisco IOS XE Software SNMP Denial of Service Vulnerability\", \"source\": {\"defects\": [\"CSCws90638\"], \"advisory\": \"cisco-sa-iosxe-snmp-dos-ZAqNm4MD\", \"discovery\": \"EXTERNAL\"}, \"metrics\": [{\"format\": \"cvssV3_1\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 7.7, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"Cisco\", \"product\": \"Cisco IOS XE Software\", \"versions\": [{\"status\": \"affected\", \"version\": \"17.2.1a\"}, {\"status\": \"affected\", \"version\": \"3.18.7SP\"}, {\"status\": \"affected\", \"version\": \"16.12.1y\"}, {\"status\": \"affected\", \"version\": \"16.12.3s\"}, {\"status\": \"affected\", \"version\": \"16.7.1b\"}, {\"status\": \"affected\", \"version\": \"16.6.2\"}, {\"status\": \"affected\", \"version\": \"16.6.5\"}, {\"status\": \"affected\", \"version\": \"16.12.1w\"}, {\"status\": \"affected\", \"version\": \"3.18.4S\"}, {\"status\": \"affected\", \"version\": \"16.9.1d\"}, {\"status\": \"affected\", \"version\": \"17.3.1\"}, {\"status\": \"affected\", \"version\": \"16.9.4c\"}, {\"status\": \"affected\", \"version\": \"16.7.1\"}, {\"status\": \"affected\", \"version\": \"17.2.1\"}, {\"status\": \"affected\", \"version\": \"16.6.8\"}, {\"status\": \"affected\", \"version\": \"16.9.1b\"}, {\"status\": \"affected\", \"version\": \"3.16.8S\"}, {\"status\": \"affected\", \"version\": \"16.9.2s\"}, {\"status\": \"affected\", \"version\": \"16.12.4\"}, {\"status\": \"affected\", \"version\": \"16.12.3a\"}, {\"status\": \"affected\", \"version\": \"17.1.1s\"}, {\"status\": \"affected\", \"version\": \"16.11.1a\"}, {\"status\": \"affected\", \"version\": \"16.7.2\"}, {\"status\": \"affected\", \"version\": \"16.11.1b\"}, {\"status\": \"affected\", \"version\": \"16.9.1s\"}, {\"status\": \"affected\", \"version\": \"16.9.3h\"}, {\"status\": \"affected\", \"version\": \"16.9.1c\"}, {\"status\": \"affected\", \"version\": \"16.6.5a\"}, {\"status\": \"affected\", \"version\": \"16.6.3\"}, {\"status\": \"affected\", \"version\": \"16.10.1f\"}, {\"status\": \"affected\", \"version\": \"17.2.1v\"}, {\"status\": \"affected\", \"version\": \"16.8.1e\"}, {\"status\": \"affected\", \"version\": \"16.9.3a\"}, {\"status\": \"affected\", \"version\": \"16.12.1a\"}, {\"status\": \"affected\", \"version\": \"16.12.1x\"}, {\"status\": \"affected\", \"version\": \"3.16.10aS\"}, {\"status\": \"affected\", \"version\": \"16.6.4s\"}, {\"status\": \"affected\", \"version\": \"16.10.1c\"}, {\"status\": \"affected\", \"version\": \"16.12.3\"}, {\"status\": \"affected\", \"version\": \"16.11.2\"}, {\"status\": \"affected\", \"version\": \"16.6.5b\"}, {\"status\": \"affected\", \"version\": \"16.12.2s\"}, {\"status\": \"affected\", \"version\": \"16.10.1b\"}, {\"status\": \"affected\", \"version\": \"16.7.3\"}, {\"status\": \"affected\", \"version\": \"16.6.7\"}, {\"status\": \"affected\", \"version\": \"16.9.6\"}, {\"status\": \"affected\", \"version\": \"16.9.2\"}, {\"status\": \"affected\", \"version\": \"3.16.10S\"}, {\"status\": \"affected\", \"version\": \"16.10.1\"}, {\"status\": \"affected\", \"version\": \"16.12.1t\"}, {\"status\": \"affected\", \"version\": \"3.18.3bSP\"}, {\"status\": \"affected\", \"version\": \"3.13.9S\"}, {\"status\": \"affected\", \"version\": \"3.18.3aSP\"}, {\"status\": \"affected\", \"version\": \"3.18.5SP\"}, {\"status\": \"affected\", \"version\": \"16.9.1\"}, {\"status\": \"affected\", \"version\": \"16.8.1a\"}, {\"status\": \"affected\", \"version\": \"3.18.8aSP\"}, {\"status\": \"affected\", \"version\": \"16.9.3s\"}, {\"status\": \"affected\", \"version\": \"16.6.7a\"}, {\"status\": \"affected\", \"version\": \"16.12.2\"}, {\"status\": \"affected\", \"version\": \"16.11.1\"}, {\"status\": \"affected\", \"version\": \"16.9.3\"}, {\"status\": \"affected\", \"version\": \"16.11.1s\"}, {\"status\": \"affected\", \"version\": \"16.12.1\"}, {\"status\": \"affected\", \"version\": \"3.16.9S\"}, {\"status\": \"affected\", \"version\": \"17.1.1\"}, {\"status\": \"affected\", \"version\": \"17.1.2\"}, {\"status\": \"affected\", \"version\": \"16.10.1d\"}, {\"status\": \"affected\", \"version\": \"17.1.1t\"}, {\"status\": \"affected\", \"version\": \"16.9.4\"}, {\"status\": \"affected\", \"version\": \"16.8.3\"}, {\"status\": \"affected\", \"version\": \"16.12.2t\"}, {\"status\": \"affected\", \"version\": \"16.9.5\"}, {\"status\": \"affected\", \"version\": \"3.16.7S\"}, {\"status\": \"affected\", \"version\": \"16.8.1s\"}, {\"status\": \"affected\", \"version\": \"16.10.1e\"}, {\"status\": \"affected\", \"version\": \"16.8.2\"}, {\"status\": \"affected\", \"version\": \"16.6.4\"}, {\"status\": \"affected\", \"version\": \"16.8.1b\"}, {\"status\": \"affected\", \"version\": \"16.10.1a\"}, {\"status\": \"affected\", \"version\": \"16.12.1z\"}, {\"status\": \"affected\", \"version\": \"16.8.1c\"}, {\"status\": \"affected\", \"version\": \"16.9.1a\"}, {\"status\": \"affected\", \"version\": \"3.16.7aS\"}, {\"status\": \"affected\", \"version\": \"16.9.5f\"}, {\"status\": \"affected\", \"version\": \"16.6.4a\"}, {\"status\": \"affected\", \"version\": \"16.10.1g\"}, {\"status\": \"affected\", \"version\": \"3.13.10S\"}, {\"status\": \"affected\", \"version\": \"16.8.1\"}, {\"status\": \"affected\", \"version\": \"16.6.6\"}, {\"status\": \"affected\", \"version\": \"16.9.2a\"}, {\"status\": \"affected\", \"version\": \"16.8.1d\"}, {\"status\": \"affected\", \"version\": \"16.10.3\"}, {\"status\": \"affected\", \"version\": \"3.18.4SP\"}, {\"status\": \"affected\", \"version\": \"3.18.6SP\"}, {\"status\": \"affected\", \"version\": \"3.18.3SP\"}, {\"status\": \"affected\", \"version\": \"16.7.1a\"}, {\"status\": \"affected\", \"version\": \"16.11.1c\"}, {\"status\": \"affected\", \"version\": \"16.10.1s\"}, {\"status\": \"affected\", \"version\": \"17.2.1r\"}, {\"status\": \"affected\", \"version\": \"3.16.7bS\"}, {\"status\": \"affected\", \"version\": \"17.1.1a\"}, {\"status\": \"affected\", \"version\": \"16.10.2\"}, {\"status\": \"affected\", \"version\": \"16.12.2a\"}, {\"status\": \"affected\", \"version\": \"3.16.6bS\"}, {\"status\": \"affected\", \"version\": \"16.12.1c\"}, {\"status\": \"affected\", \"version\": \"16.12.1s\"}, {\"status\": \"affected\", \"version\": \"16.7.4\"}, {\"status\": \"affected\", \"version\": \"3.18.9SP\"}, {\"status\": \"affected\", \"version\": \"17.2.2\"}, {\"status\": \"affected\", \"version\": \"16.9.8\"}, {\"status\": \"affected\", \"version\": \"16.9.7\"}, {\"status\": \"affected\", \"version\": \"17.1.3\"}, {\"status\": \"affected\", \"version\": \"17.3.1a\"}, {\"status\": \"affected\", \"version\": \"17.3.2a\"}, {\"status\": \"affected\", \"version\": \"16.12.5\"}, {\"status\": \"affected\", \"version\": \"17.3.1w\"}, {\"status\": \"affected\", \"version\": \"17.3.2\"}, {\"status\": \"affected\", \"version\": \"17.4.1\"}, {\"status\": \"affected\", \"version\": \"16.12.4a\"}, {\"status\": \"affected\", \"version\": \"17.4.1a\"}, {\"status\": \"affected\", \"version\": \"3.16.10bS\"}, {\"status\": \"affected\", \"version\": \"17.3.1x\"}, {\"status\": \"affected\", \"version\": \"17.3.3\"}, {\"status\": \"affected\", \"version\": \"16.6.9\"}, {\"status\": \"affected\", \"version\": \"17.2.3\"}, {\"status\": \"affected\", \"version\": \"17.5.1\"}, {\"status\": \"affected\", \"version\": \"16.12.1z1\"}, {\"status\": \"affected\", \"version\": \"16.12.5a\"}, {\"status\": \"affected\", \"version\": \"17.4.1b\"}, {\"status\": \"affected\", \"version\": \"17.3.1z\"}, {\"status\": \"affected\", \"version\": \"16.12.5b\"}, {\"status\": \"affected\", \"version\": \"17.4.2\"}, {\"status\": \"affected\", \"version\": \"17.3.3a\"}, {\"status\": \"affected\", \"version\": \"17.3.5\"}, {\"status\": \"affected\", \"version\": \"17.3.4\"}, {\"status\": \"affected\", \"version\": \"17.5.1a\"}, {\"status\": \"affected\", \"version\": \"16.12.6\"}, {\"status\": \"affected\", \"version\": \"17.6.1\"}, {\"status\": \"affected\", \"version\": \"16.12.1z2\"}, {\"status\": \"affected\", \"version\": \"16.6.10\"}, {\"status\": \"affected\", \"version\": \"17.3.4a\"}, {\"status\": \"affected\", \"version\": \"17.6.1a\"}, {\"status\": \"affected\", \"version\": \"17.7.1\"}, {\"status\": \"affected\", \"version\": \"17.6.1x\"}, {\"status\": \"affected\", \"version\": \"17.6.2\"}, {\"status\": \"affected\", \"version\": \"16.12.6a\"}, {\"status\": \"affected\", \"version\": \"17.3.4c\"}, {\"status\": \"affected\", \"version\": \"17.4.2a\"}, {\"status\": \"affected\", \"version\": \"17.3.4b\"}, {\"status\": \"affected\", \"version\": \"17.7.1a\"}, {\"status\": \"affected\", \"version\": \"16.12.7\"}, {\"status\": \"affected\", \"version\": \"17.8.1a\"}, {\"status\": \"affected\", \"version\": \"17.6.3a\"}, {\"status\": \"affected\", \"version\": \"17.6.3\"}, {\"status\": \"affected\", \"version\": \"17.7.2\"}, {\"status\": \"affected\", \"version\": \"17.7.1b\"}, {\"status\": \"affected\", \"version\": \"17.9.1w\"}, {\"status\": \"affected\", \"version\": \"17.3.5a\"}, {\"status\": \"affected\", \"version\": \"17.6.1z\"}, {\"status\": \"affected\", \"version\": \"16.12.8\"}, {\"status\": \"affected\", \"version\": \"17.8.1\"}, {\"status\": \"affected\", \"version\": \"17.9.1\"}, {\"status\": \"affected\", \"version\": \"17.6.4\"}, {\"status\": \"affected\", \"version\": \"17.3.5b\"}, {\"status\": \"affected\", \"version\": \"17.9.1a\"}, {\"status\": \"affected\", \"version\": \"17.3.6\"}, {\"status\": \"affected\", \"version\": \"17.10.1\"}, {\"status\": \"affected\", \"version\": \"16.9.8a\"}, {\"status\": \"affected\", \"version\": \"17.6.1z1\"}, {\"status\": \"affected\", \"version\": \"17.10.1a\"}, {\"status\": \"affected\", \"version\": \"17.9.2\"}, {\"status\": \"affected\", \"version\": \"17.6.5\"}, {\"status\": \"affected\", \"version\": \"17.9.1x\"}, {\"status\": \"affected\", \"version\": \"17.9.1y\"}, {\"status\": \"affected\", \"version\": \"16.9.8b\"}, {\"status\": \"affected\", \"version\": \"17.3.7\"}, {\"status\": \"affected\", \"version\": \"17.9.2a\"}, {\"status\": \"affected\", \"version\": \"17.9.3\"}, {\"status\": \"affected\", \"version\": \"16.12.9\"}, {\"status\": \"affected\", \"version\": \"17.11.1\"}, {\"status\": \"affected\", \"version\": \"17.10.1b\"}, {\"status\": \"affected\", \"version\": \"17.6.6\"}, {\"status\": \"affected\", \"version\": \"17.9.1x1\"}, {\"status\": \"affected\", \"version\": \"17.11.1a\"}, {\"status\": \"affected\", \"version\": \"17.9.3a\"}, {\"status\": \"affected\", \"version\": \"17.12.1\"}, {\"status\": \"affected\", \"version\": \"17.3.8\"}, {\"status\": \"affected\", \"version\": \"17.9.4\"}, {\"status\": \"affected\", \"version\": \"16.12.10\"}, {\"status\": \"affected\", \"version\": \"17.12.1w\"}, {\"status\": \"affected\", \"version\": \"17.9.1y1\"}, {\"status\": \"affected\", \"version\": \"17.12.1a\"}, {\"status\": \"affected\", \"version\": \"17.9.5\"}, {\"status\": \"affected\", \"version\": \"17.13.1\"}, {\"status\": \"affected\", \"version\": \"17.12.1x\"}, {\"status\": \"affected\", \"version\": \"17.12.2\"}, {\"status\": \"affected\", \"version\": \"17.14.1\"}, {\"status\": \"affected\", \"version\": \"17.9.4a\"}, {\"status\": \"affected\", \"version\": \"17.3.8a\"}, {\"status\": \"affected\", \"version\": \"17.6.6a\"}, {\"status\": \"affected\", \"version\": \"17.6.5a\"}, {\"status\": \"affected\", \"version\": \"17.6.7\"}, {\"status\": \"affected\", \"version\": \"16.12.10a\"}, {\"status\": \"affected\", \"version\": \"17.15.1\"}, {\"status\": \"affected\", \"version\": \"17.13.1a\"}, {\"status\": \"affected\", \"version\": \"17.12.2a\"}, {\"status\": \"affected\", \"version\": \"16.12.11\"}, {\"status\": \"affected\", \"version\": \"17.12.3\"}, {\"status\": \"affected\", \"version\": \"17.12.1y\"}, {\"status\": \"affected\", \"version\": \"17.12.1z\"}, {\"status\": \"affected\", \"version\": \"17.9.5a\"}, {\"status\": \"affected\", \"version\": \"17.14.1a\"}, {\"status\": \"affected\", \"version\": \"17.9.5b\"}, {\"status\": \"affected\", \"version\": \"17.6.8\"}, {\"status\": \"affected\", \"version\": \"16.12.12\"}, {\"status\": \"affected\", \"version\": \"17.12.4\"}, {\"status\": \"affected\", \"version\": \"17.9.6\"}, {\"status\": \"affected\", \"version\": \"17.17.1\"}, {\"status\": \"affected\", \"version\": \"17.16.1\"}, {\"status\": \"affected\", \"version\": \"17.15.1w\"}, {\"status\": \"affected\", \"version\": \"17.12.3a\"}, {\"status\": \"affected\", \"version\": \"17.9.5c\"}, {\"status\": \"affected\", \"version\": \"17.15.1a\"}, {\"status\": \"affected\", \"version\": \"17.12.1z1\"}, {\"status\": \"affected\", \"version\": \"17.15.2\"}, {\"status\": \"affected\", \"version\": \"17.15.1b\"}, {\"status\": \"affected\", \"version\": \"17.9.5d\"}, {\"status\": \"affected\", \"version\": \"17.15.1x\"}, {\"status\": \"affected\", \"version\": \"17.9.6a\"}, {\"status\": \"affected\", \"version\": \"17.12.1z2\"}, {\"status\": \"affected\", \"version\": \"17.6.8a\"}, {\"status\": \"affected\", \"version\": \"17.16.1a\"}, {\"status\": \"affected\", \"version\": \"16.12.13\"}, {\"status\": \"affected\", \"version\": \"17.15.3\"}, {\"status\": \"affected\", \"version\": \"17.9.7\"}, {\"status\": \"affected\", \"version\": \"17.12.5\"}, {\"status\": \"affected\", \"version\": \"17.15.1y\"}, {\"status\": \"affected\", \"version\": \"17.9.5e\"}, {\"status\": \"affected\", \"version\": \"17.12.4a\"}, {\"status\": \"affected\", \"version\": \"17.15.2a\"}, {\"status\": \"affected\", \"version\": \"17.15.2c\"}, {\"status\": \"affected\", \"version\": \"17.15.2b\"}, {\"status\": \"affected\", \"version\": \"17.12.1z3\"}, {\"status\": \"affected\", \"version\": \"17.9.5f\"}, {\"status\": \"affected\", \"version\": \"17.12.4b\"}, {\"status\": \"affected\", \"version\": \"17.12.5a\"}, {\"status\": \"affected\", \"version\": \"17.18.1\"}, {\"status\": \"affected\", \"version\": \"17.12.6\"}, {\"status\": \"affected\", \"version\": \"17.12.1z4\"}, {\"status\": \"affected\", \"version\": \"17.9.8\"}, {\"status\": \"affected\", \"version\": \"17.9.7a\"}, {\"status\": \"affected\", \"version\": \"17.15.3a\"}, {\"status\": \"affected\", \"version\": \"17.15.4\"}, {\"status\": \"affected\", \"version\": \"17.12.5b\"}, {\"status\": \"affected\", \"version\": \"17.15.3b\"}, {\"status\": \"affected\", \"version\": \"16.12.14\"}, {\"status\": \"affected\", \"version\": \"17.9.7b\"}, {\"status\": \"affected\", \"version\": \"17.12.5c\"}, {\"status\": \"affected\", \"version\": \"17.18.1a\"}, {\"status\": \"affected\", \"version\": \"17.15.4a\"}, {\"status\": \"affected\", \"version\": \"17.18.2\"}, {\"status\": \"affected\", \"version\": \"17.18.1w\"}, {\"status\": \"affected\", \"version\": \"17.15.4b\"}, {\"status\": \"affected\", \"version\": \"17.12.6a\"}, {\"status\": \"affected\", \"version\": \"17.15.4c\"}, {\"status\": \"affected\", \"version\": \"17.9.9\"}, {\"status\": \"affected\", \"version\": \"17.12.5d\"}, {\"status\": \"affected\", \"version\": \"16.12.15\"}, {\"status\": \"affected\", \"version\": \"17.15.4s1\"}, {\"status\": \"affected\", \"version\": \"17.12.1z5\"}, {\"status\": \"affected\", \"version\": \"17.18.1x\"}, {\"status\": \"affected\", \"version\": \"17.12.1z6\"}, {\"status\": \"affected\", \"version\": \"17.15.4d\"}, {\"status\": \"affected\", \"version\": \"17.12.6b\"}, {\"status\": \"affected\", \"version\": \"17.4.1c\"}, {\"status\": \"affected\", \"version\": \"17.18.1y\"}], \"defaultStatus\": \"unknown\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-snmp-dos-ZAqNm4MD\", \"name\": \"cisco-sa-iosxe-snmp-dos-ZAqNm4MD\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition.\\r\\n\\r\\nThis vulnerability is due to improper error handling when parsing SNMP requests. This vulnerability affects all versions of SNMP \u0026mdash; Versions 1, 2c, and 3. An attacker could exploit this vulnerability by sending a malformed SNMP request to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly. The attacker must have the SNMPv1 or v2c read-only or read-write community string or valid SNMPv3 user credentials on the affected device.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-772\", \"description\": \"Missing Release of Resource after Effective Lifetime\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-08-05T16:18:21.590Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-20124\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T17:20:47.421Z\", \"dateReserved\": \"2025-10-08T11:59:15.378Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-08-05T16:18:21.590Z\", \"assignerShortName\": \"cisco\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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…