CVE-2025-20174: A vulnerability in the SNMP subsystem of Cisco IOS Software and Cisco IOS X

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Cisco IOS

15.4(1)Taffected
15.4(2)Taffected
15.4(1)T2affected
15.4(1)T1affected
15.4(1)T3affected
15.4(2)T1affected
15.4(2)T3affected
15.4(2)T2affected
15.4(1)T4affected
15.4(2)T4affected
15.4(1)Saffected
15.4(2)Saffected
15.4(3)Saffected
15.4(1)S1affected
15.4(1)S2affected
15.4(2)S1affected
15.4(1)S3affected
15.4(3)S1affected
15.4(2)S2affected
15.4(3)S2affected
15.4(3)S3affected
15.4(1)S4affected
15.4(2)S3affected
15.4(2)S4affected
15.4(3)S4affected
15.4(3)S5affected
15.4(3)S6affected
15.4(3)S7affected
15.4(3)S6aaffected
15.4(3)S8affected
15.4(3)S9affected
15.4(3)S10affected
15.2(1)SYaffected
15.2(1)SY1affected
15.2(1)SY0aaffected
15.2(1)SY2affected
15.2(2)SYaffected
15.2(1)SY1aaffected
15.2(2)SY1affected
15.2(2)SY2affected
15.2(1)SY3affected
15.2(1)SY4affected
15.2(2)SY3affected
15.2(1)SY5affected
15.2(1)SY6affected
15.2(1)SY7affected
15.2(1)SY8affected
15.4(1)CGaffected
15.4(1)CG1affected
15.4(2)CGaffected
15.5(1)Saffected
15.5(2)Saffected
15.5(1)S1affected
15.5(3)Saffected
15.5(1)S2affected
15.5(1)S3affected
15.5(2)S1affected
15.5(2)S2affected
15.5(3)S1affected
15.5(3)S1aaffected
15.5(2)S3affected
15.5(3)S2affected
15.5(3)S0aaffected
15.5(3)S3affected
15.5(1)S4affected
15.5(2)S4affected
15.5(3)S4affected
15.5(3)S5affected
15.5(3)S6affected
15.5(3)S6aaffected
15.5(3)S7affected
15.5(3)S6baffected
15.5(3)S8affected
15.5(3)S9affected
15.5(3)S10affected
15.5(3)S9aaffected
15.5(1)Taffected
15.5(1)T1affected
15.5(2)Taffected
15.5(1)T3affected
15.5(2)T1affected
15.5(2)T2affected
15.5(2)T3affected
15.5(2)T4affected
15.5(1)T4affected
15.5(3)Maffected
15.5(3)M1affected
15.5(3)M0aaffected
15.5(3)M2affected
15.5(3)M3affected
15.5(3)M4affected
15.5(3)M4aaffected
15.5(3)M5affected
15.5(3)M6affected
15.5(3)M7affected
15.5(3)M6aaffected
15.5(3)M8affected
15.5(3)M9affected
15.5(3)M10affected
15.5(3)SNaffected
15.6(1)Saffected
15.6(2)Saffected
15.6(2)S1affected
15.6(1)S1affected
15.6(1)S2affected
15.6(2)S2affected
15.6(1)S3affected
15.6(2)S3affected
15.6(1)S4affected
15.6(2)S4affected
15.6(1)Taffected
15.6(2)Taffected
15.6(1)T0aaffected
15.6(1)T1affected
15.6(2)T1affected
15.6(1)T2affected
15.6(2)T2affected
15.6(1)T3affected
15.6(2)T3affected
15.3(1)SYaffected
15.3(1)SY1affected
15.3(1)SY2affected
15.6(2)SPaffected
15.6(2)SP1affected
15.6(2)SP2affected
15.6(2)SP3affected
15.6(2)SP4affected
15.6(2)SP5affected
15.6(2)SP6affected
15.6(2)SP7affected
15.6(2)SP8affected
15.6(2)SP9affected
15.6(2)SNaffected
15.6(3)Maffected
15.6(3)M1affected
15.6(3)M0aaffected
15.6(3)M1baffected
15.6(3)M2affected
15.6(3)M2aaffected
15.6(3)M3affected
15.6(3)M3aaffected
15.6(3)M4affected
15.6(3)M5affected
15.6(3)M6affected
15.6(3)M7affected
15.6(3)M6aaffected
15.6(3)M6baffected
15.6(3)M8affected
15.6(3)M9affected
15.4(1)SYaffected
15.4(1)SY1affected
15.4(1)SY2affected
15.4(1)SY3affected
15.4(1)SY4affected
15.5(1)SYaffected
15.5(1)SY1affected
15.5(1)SY2affected
15.5(1)SY3affected
15.5(1)SY4affected
15.5(1)SY5affected
15.5(1)SY6affected
15.5(1)SY7affected
15.5(1)SY8affected
15.5(1)SY9affected
15.5(1)SY10affected
15.5(1)SY11affected
15.5(1)SY12affected
15.5(1)SY13affected
15.5(1)SY14affected
15.7(3)Maffected
15.7(3)M1affected
15.7(3)M0aaffected
15.7(3)M3affected
15.7(3)M2affected
15.7(3)M4affected
15.7(3)M5affected
15.7(3)M4aaffected
15.7(3)M4baffected
15.7(3)M6affected
15.7(3)M7affected
15.7(3)M8affected
15.7(3)M9affected
15.8(3)Maffected
15.8(3)M1affected
15.8(3)M0aaffected
15.8(3)M0baffected
15.8(3)M2affected
15.8(3)M1aaffected
15.8(3)M3affected
15.8(3)M2aaffected
15.8(3)M4affected
15.8(3)M3aaffected
15.8(3)M3baffected
15.8(3)M5affected
15.8(3)M6affected
15.8(3)M7affected
15.8(3)M8affected
15.8(3)M9affected
15.9(3)Maffected
15.9(3)M1affected
15.9(3)M0aaffected
15.9(3)M2affected
15.9(3)M3affected
15.9(3)M2aaffected
15.9(3)M3aaffected
15.9(3)M4affected
15.9(3)M3baffected
15.9(3)M5affected
15.9(3)M4aaffected
15.9(3)M6affected
15.9(3)M7affected
15.9(3)M6aaffected
15.9(3)M6baffected
15.9(3)M8affected
15.9(3)M7aaffected
15.9(3)M9affected
15.9(3)M8baffected
15.9(3)M10affected
15.9(3)M11affected

Cisco Cisco IOS XE Software

3.11.1Saffected
3.11.2Saffected
3.11.0Saffected
3.11.3Saffected
3.11.4Saffected
3.12.0Saffected
3.12.1Saffected
3.12.2Saffected
3.12.3Saffected
3.12.0aSaffected
3.12.4Saffected
3.13.0Saffected
3.13.1Saffected
3.13.2Saffected
3.13.3Saffected
3.13.4Saffected
3.13.5Saffected
3.13.2aSaffected
3.13.0aSaffected
3.13.5aSaffected
3.13.6Saffected
3.13.7Saffected
3.13.6aSaffected
3.13.7aSaffected
3.13.8Saffected
3.13.9Saffected
3.13.10Saffected
3.14.0Saffected
3.14.1Saffected
3.14.2Saffected
3.14.3Saffected
3.14.4Saffected
3.15.0Saffected
3.15.1Saffected
3.15.2Saffected
3.15.1cSaffected
3.15.3Saffected
3.15.4Saffected
3.16.0Saffected
3.16.1Saffected
3.16.1aSaffected
3.16.2Saffected
3.16.2aSaffected
3.16.0cSaffected
3.16.3Saffected
3.16.2bSaffected
3.16.3aSaffected
3.16.4Saffected
3.16.4aSaffected
3.16.4bSaffected
3.16.5Saffected
3.16.4dSaffected
3.16.6Saffected
3.16.7Saffected
3.16.6bSaffected
3.16.7aSaffected
3.16.7bSaffected
3.16.8Saffected
3.16.9Saffected
3.16.10Saffected
3.17.0Saffected
3.17.1Saffected
3.17.2Saffected
3.17.1aSaffected
3.17.3Saffected
3.17.4Saffected
16.1.1affected
16.1.2affected
16.1.3affected
16.2.1affected
16.2.2affected
16.3.1affected
16.3.2affected
16.3.3affected
16.3.1aaffected
16.3.4affected
16.3.5affected
16.3.5baffected
16.3.6affected
16.3.7affected
16.3.8affected
16.3.9affected
16.3.10affected
16.3.11affected
16.4.1affected
16.4.2affected
16.4.3affected
16.5.1affected
16.5.1aaffected
16.5.1baffected
16.5.2affected
16.5.3affected
3.18.0aSaffected
3.18.0Saffected
3.18.1Saffected
3.18.2Saffected
3.18.3Saffected
3.18.4Saffected
3.18.0SPaffected
3.18.1SPaffected
3.18.1aSPaffected
3.18.1bSPaffected
3.18.1cSPaffected
3.18.2SPaffected
3.18.2aSPaffected
3.18.3SPaffected
3.18.4SPaffected
3.18.3aSPaffected
3.18.3bSPaffected
3.18.5SPaffected
3.18.6SPaffected
3.18.7SPaffected
3.18.8aSPaffected
3.18.9SPaffected
16.6.1affected
16.6.2affected
16.6.3affected
16.6.4affected
16.6.5affected
16.6.4aaffected
16.6.5aaffected
16.6.6affected
16.6.7affected
16.6.8affected
16.6.9affected
16.6.10affected
16.7.1affected
16.7.1aaffected
16.7.1baffected
16.7.2affected
16.7.3affected
16.7.4affected
16.8.1affected
16.8.1aaffected
16.8.1baffected
16.8.1saffected
16.8.1caffected
16.8.1daffected
16.8.2affected
16.8.1eaffected
16.8.3affected
16.9.1affected
16.9.2affected
16.9.1aaffected
16.9.1baffected
16.9.1saffected
16.9.3affected
16.9.4affected
16.9.3aaffected
16.9.5affected
16.9.6affected
16.9.7affected
16.9.8affected
16.10.1affected
16.10.1aaffected
16.10.1baffected
16.10.1saffected
16.10.1caffected
16.10.1eaffected
16.10.1daffected
16.10.2affected
16.10.1faffected
16.10.1gaffected
16.10.3affected
16.11.1affected
16.11.1aaffected
16.11.1baffected
16.11.2affected
16.11.1saffected
16.12.1affected
16.12.1saffected
16.12.1aaffected
16.12.1caffected
16.12.1waffected
16.12.2affected
16.12.1yaffected
16.12.2aaffected
16.12.3affected
16.12.8affected
16.12.2saffected
16.12.1xaffected
16.12.1taffected
16.12.4affected
16.12.3saffected
16.12.3aaffected
16.12.4aaffected
16.12.5affected
16.12.6affected
16.12.1z1affected
16.12.5aaffected
16.12.5baffected
16.12.1z2affected
16.12.6aaffected
16.12.7affected
16.12.9affected
16.12.10affected
16.12.10aaffected
16.12.11affected
16.12.12affected
17.1.1affected
17.1.1aaffected
17.1.1saffected
17.1.1taffected
17.1.3affected
17.2.1affected
17.2.1raffected
17.2.1aaffected
17.2.1vaffected
17.2.2affected
17.2.3affected
17.3.1affected
17.3.2affected
17.3.3affected
17.3.1aaffected
17.3.1waffected
17.3.2aaffected
17.3.1xaffected
17.3.1zaffected
17.3.4affected
17.3.5affected
17.3.4aaffected
17.3.6affected
17.3.4baffected
17.3.4caffected
17.3.5aaffected
17.3.5baffected
17.3.7affected
17.3.8affected
17.3.8aaffected
17.4.1affected
17.4.2affected
17.4.1aaffected
17.4.1baffected
17.4.2aaffected
17.5.1affected
17.5.1aaffected
17.6.1affected
17.6.2affected
17.6.1waffected
17.6.1aaffected
17.6.1xaffected
17.6.3affected
17.6.1yaffected
17.6.1zaffected
17.6.3aaffected
17.6.4affected
17.6.1z1affected
17.6.5affected
17.6.6affected
17.6.6aaffected
17.6.5aaffected
17.6.7affected
17.6.8affected
17.6.8aaffected
17.7.1affected
17.7.1aaffected
17.7.1baffected
17.7.2affected
17.11.99SWaffected

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-dos-sdxnSUcW ↗