7.7
High
CVE-2025-20175 A vulnerability in the SNMP subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated,…
Description
A vulnerability in the SNMP subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to improper error handling when parsing SNMP requests. An attacker could exploit this vulnerability by sending a crafted SNMP request to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition. This vulnerability affects SNMP versions 1, 2c, and 3. To exploit this vulnerability through SNMP v2c or earlier, the attacker must know a valid read-write or read-only SNMP community string for the affected system. To exploit this vulnerability through SNMP v3, the attacker must have valid SNMP user credentials for the affected system.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| IOS | Versions not published | |
| Cisco IOS XE Software 17.16 | 17.16.1a → 17.16.1 | No fix stated |
| Cisco IOS XE Software 17.15 | 17.15.1w → 17.15.2 | No fix stated |
| Cisco IOS XE Software 17.14 | 17.14.1a → 17.14.1 | No fix stated |
| Cisco IOS XE Software 17.13 | 17.13.1a → 17.13.1 | No fix stated |
| Cisco IOS XE Software 17.12 | 17.12.1w → 17.12.4 | No fix stated |
| Cisco IOS XE Software 17.11 | 17.11.1a → 17.11.99SW | No fix stated |
| Cisco IOS XE Software 17.10 | 17.10.1a → 17.10.1 | No fix stated |
| Cisco IOS XE Software 17.9 | 17.9.1w → 17.9.6 | No fix stated |
Show the 37 other branches Hide the 37 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco IOS XE Software 17.8 | 17.8.1a → 17.8.1 | No fix stated |
| Cisco IOS XE Software 17.7 | 17.7.1a → 17.7.2 | No fix stated |
| Cisco IOS XE Software 17.6 | 17.6.1w → 17.6.8 | No fix stated |
| Cisco IOS XE Software 17.5 | 17.5.1a → 17.5.1 | No fix stated |
| Cisco IOS XE Software 17.4 | 17.4.1a → 17.4.2 | No fix stated |
| Cisco IOS XE Software 17.3 | 17.3.1w → 17.3.8 | No fix stated |
| Cisco IOS XE Software 17.2 | 17.2.1r → 17.2.3 | No fix stated |
| Cisco IOS XE Software 17.1 | 17.1.1s → 17.1.3 | No fix stated |
| Cisco IOS XE Software 16.12 | 16.12.1s → 16.12.12 | No fix stated |
| Cisco IOS XE Software 16.11 | 16.11.1s → 16.11.2 | No fix stated |
| Cisco IOS XE Software 16.10 | 16.10.1s → 16.10.3 | No fix stated |
| Cisco IOS XE Software 16.9 | 16.9.1s → 16.9.8 | No fix stated |
| Cisco IOS XE Software 16.8 | 16.8.1s → 16.8.3 | No fix stated |
| Cisco IOS XE Software 16.7 | 16.7.1a → 16.7.4 | No fix stated |
| Cisco IOS XE Software 16.6 | 16.6.1 → 16.6.10 | No fix stated |
| Cisco IOS XE Software 16.5 | 16.5.1a → 16.5.3 | No fix stated |
| Cisco IOS XE Software 16.4 | 16.4.1 → 16.4.3 | No fix stated |
| Cisco IOS XE Software 16.3 | 16.3.1a → 16.3.11 | No fix stated |
| Cisco IOS XE Software 16.2 | 16.2.1 → 16.2.2 | No fix stated |
| Cisco IOS XE Software 16.1 | 16.1.1 → 16.1.3 | No fix stated |
| Cisco IOS XE Software 3.18 | 3.18.0S → 3.18.9SP | No fix stated |
| Cisco IOS XE Software 3.17 | 3.17.0S → 3.17.4S | No fix stated |
| Cisco IOS XE Software 3.16 | 3.16.0S → 3.16.10S | No fix stated |
| Cisco IOS XE Software 3.15 | 3.15.0S → 3.15.4S | No fix stated |
| Cisco IOS XE Software 3.14 | 3.14.0S → 3.14.4S | No fix stated |
| Cisco IOS XE Software 3.13 | 3.13.0S → 3.13.10S | No fix stated |
| Cisco IOS XE Software 3.12 | 3.12.0S → 3.12.4S | No fix stated |
| Cisco IOS XE Software 3.11 | 3.11.0S → 3.11.11E | No fix stated |
| Cisco IOS XE Software 3.10 | 3.10.0S → 3.10.10S | No fix stated |
| Cisco IOS XE Software 3.9 | 3.9.0S → 3.9.2S | No fix stated |
| Cisco IOS XE Software 3.8 | 3.8.0S → 3.8.10E | No fix stated |
| Cisco IOS XE Software 3.7 | 3.7.0S → 3.7.7S | No fix stated |
| Cisco IOS XE Software 3.6 | 3.6.0E → 3.6.10E | No fix stated |
| Cisco IOS XE Software 3.5 | 3.5.0E → 3.5.8SQ | No fix stated |
| Cisco IOS XE Software 3.4 | 3.4.0SG → 3.4.8SG | No fix stated |
| Cisco IOS XE Software 3.3 | 3.3.0SG → 3.3.5SE | No fix stated |
| Cisco IOS XE Software 3.2 | 3.2.0SG → 3.2.11SG | No fix stated |
References
- cisco-sa-snmp-dos-sdxnSUcW sec.cloudapps.cisco.com
Timeline
- Published
- Last modified
Other CVEs of IOS
The 39 CVEs of IOS →
CVE-2026-20301
A vulnerability in the Extensible Messaging Client Protocol (XMCP), also referred to as the External Client protocol, of…
8.6
High
CVE-2026-20125
A vulnerability in the HTTP Server feature of Cisco IOS Software and Cisco IOS XE Software Release 3E could allow an…
7.7
High
CVE-2026-20012
A vulnerability in the Internet Key Exchange version 2 (IKEv2) feature of Cisco IOS Software, Cisco IOS XE Software,…
8.6
High
CVE-2025-20363
A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure…
9.0
Critical