CVE-2025-20176: 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

15.0(2)EYaffected
15.0(2)EY1affected
15.0(2)EY2affected
15.0(2)EY3affected
15.0(2)SEaffected
15.0(2)SE1affected
15.0(2)SE2affected
15.0(2)SE3affected
15.0(2)SE4affected
15.0(2)SE5affected
15.0(2)SE6affected
15.0(2)SE7affected
15.0(2)SE8affected
15.0(2)SE9affected
15.0(2)SE10affected
15.0(2)SE11affected
15.0(2)SE10aaffected
15.0(2)SE12affected
15.0(2)SE13affected
15.0(1)SYaffected
15.0(1)SY1affected
15.0(1)SY2affected
15.0(1)SY3affected
15.0(1)SY4affected
15.0(1)SY5affected
15.0(1)SY6affected
15.0(1)SY7affected
15.0(1)SY8affected
15.0(1)SY7aaffected
15.0(1)SY9affected
15.0(1)SY10affected
15.0(2)EXaffected
15.0(2)EX1affected
15.0(2)EX2affected
15.0(2)EX3affected
15.0(2)EX4affected
15.0(2)EX5affected
15.0(2)EX8affected
15.0(2a)EX5affected
15.0(2)EX10affected
15.0(2)EX11affected
15.0(2)EX13affected
15.0(2)EX12affected
15.1(1)SYaffected
15.1(1)SY1affected
15.1(2)SYaffected
15.1(2)SY1affected
15.1(2)SY2affected
15.1(1)SY2affected
15.1(1)SY3affected
15.1(2)SY3affected
15.1(1)SY4affected
15.1(2)SY4affected
15.1(1)SY5affected
15.1(2)SY5affected
15.1(2)SY4aaffected
15.1(1)SY6affected
15.1(2)SY6affected
15.1(2)SY7affected
15.1(2)SY8affected
15.1(2)SY9affected
15.1(2)SY10affected
15.1(2)SY11affected
15.1(2)SY12affected
15.1(2)SY13affected
15.1(2)SY14affected
15.1(2)SY15affected
15.1(2)SY16affected
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
15.0(2)EAaffected
15.0(2)EA1affected
15.2(1)Eaffected
15.2(2)Eaffected
15.2(1)E1affected
15.2(3)Eaffected
15.2(1)E2affected
15.2(1)E3affected
15.2(2)E1affected
15.2(4)Eaffected
15.2(3)E1affected
15.2(2)E2affected
15.2(2a)E1affected
15.2(2)E3affected
15.2(2a)E2affected
15.2(3)E2affected
15.2(3a)Eaffected
15.2(3)E3affected
15.2(4)E1affected
15.2(2)E4affected
15.2(2)E5affected
15.2(4)E2affected
15.2(3)E4affected
15.2(5)Eaffected
15.2(4)E3affected
15.2(2)E6affected
15.2(5a)Eaffected
15.2(5)E1affected
15.2(5b)Eaffected
15.2(2)E5aaffected
15.2(5c)Eaffected
15.2(2)E5baffected
15.2(5a)E1affected
15.2(4)E4affected
15.2(2)E7affected
15.2(5)E2affected
15.2(6)Eaffected
15.2(4)E5affected
15.2(5)E2caffected
15.2(2)E8affected
15.2(6)E0aaffected
15.2(6)E1affected
15.2(6)E0caffected
15.2(4)E6affected
15.2(6)E2affected
15.2(2)E9affected
15.2(4)E7affected
15.2(7)Eaffected
15.2(2)E10affected
15.2(4)E8affected
15.2(6)E2aaffected
15.2(6)E2baffected
15.2(7)E1affected
15.2(7)E0aaffected
15.2(7)E0baffected
15.2(7)E0saffected
15.2(6)E3affected
15.2(4)E9affected
15.2(7)E2affected
15.2(7a)E0baffected
15.2(4)E10affected
15.2(7)E3affected
15.2(7)E1aaffected
15.2(7b)E0baffected
15.2(7)E2aaffected
15.2(4)E10aaffected
15.2(7)E4affected
15.2(7)E3kaffected
15.2(8)Eaffected
15.2(8)E1affected
15.2(7)E5affected
15.2(7)E6affected
15.2(8)E2affected
15.2(4)E10daffected
15.2(7)E7affected
15.2(8)E3affected
15.2(7)E8affected
15.2(8)E4affected
15.2(7)E9affected
15.2(8)E5affected
15.2(8)E6affected
15.2(7)E10affected
15.2(7)E11affected
15.2(8)E7affected
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
15.0(2)EZaffected
15.2(1)EYaffected
15.0(2)EJaffected
15.0(2)EJ1affected
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
15.2(5)EXaffected
15.0(2)EKaffected
15.0(2)EK1affected
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
15.2(2)EBaffected
15.2(2)EB1affected
15.2(2)EB2affected
15.2(6)EBaffected
15.5(1)Taffected
15.5(1)T1affected
15.5(2)Taffected
15.5(1)T2affected
15.5(1)T3affected
15.5(2)T1affected
15.5(2)T2affected
15.5(2)T3affected
15.5(2)T4affected
15.5(1)T4affected
15.2(2)EAaffected
15.2(2)EA1affected
15.2(2)EA2affected
15.2(3)EAaffected
15.2(4)EAaffected
15.2(4)EA1affected
15.2(2)EA3affected
15.2(4)EA3affected
15.2(5)EAaffected
15.2(4)EA4affected
15.2(4)EA5affected
15.2(4)EA6affected
15.2(4)EA7affected
15.2(4)EA8affected
15.2(4)EA9affected
15.2(4)EA9aaffected
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
15.3(3)JDaffected
15.3(3)JD2affected
15.3(3)JD3affected
15.3(3)JD4affected
15.3(3)JD5affected
15.3(3)JD6affected
15.3(3)JD7affected
15.3(3)JD8affected
15.3(3)JD9affected
15.3(3)JD11affected
15.3(3)JD13affected
15.3(3)JD14affected
15.3(3)JD16affected
15.3(3)JD17affected
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
15.2(4)EC1affected
15.2(4)EC2affected
15.4(1)SYaffected
15.4(1)SY1affected
15.4(1)SY2affected
15.4(1)SY3affected
15.4(1)SY4affected
15.3(3)JEaffected
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
15.3(3)JFaffected
15.3(3)JF1affected
15.3(3)JF2affected
15.3(3)JF4affected
15.3(3)JF5affected
15.3(3)JF6affected
15.3(3)JF7affected
15.3(3)JF8affected
15.3(3)JF9affected
15.3(3)JF10affected
15.3(3)JF11affected
15.3(3)JF12affected
15.3(3)JF12iaffected
15.3(3)JF14affected
15.3(3)JF14iaffected
15.3(3)JF15affected
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
15.3(3)JGaffected
15.3(3)JG1affected
15.3(3)JHaffected
15.3(3)JH1affected
15.3(3)JI1affected
15.3(3)JI3affected
15.3(3)JI4affected
15.3(3)JI5affected
15.3(3)JI6affected
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
15.3(3)JKaffected
15.3(3)JK1affected
15.3(3)JK2affected
15.3(3)JK3affected
15.3(3)JK2aaffected
15.3(3)JK1taffected
15.3(3)JK4affected
15.3(3)JK5affected
15.3(3)JK6affected
15.3(3)JK7affected
15.3(3)JK8affected
15.3(3)JK8aaffected
15.3(3)JK8baffected
15.3(3)JK9affected
15.3(3)JK10affected
15.3(3)JK11affected
15.3(3)JJaffected
15.3(3)JJ1affected
15.3(3)JPI1affected
15.3(3)JPI4affected
15.3(3)JPI1taffected
15.3(3)JPI5affected
15.3(3)JPI7affected
15.3(3)JPI6aaffected
15.3(3)JPI8aaffected
15.3(3)JPI9affected
15.3(3)JPI10affected
15.3(3)JPJ2affected
15.3(3)JPJ3affected
15.3(3)JPJ2taffected
15.3(3)JPJ3aaffected
15.3(3)JPJ4affected
15.3(3)JPJ5affected
15.3(3)JPJ6affected
15.3(3)JPJ7affected
15.3(3)JPJ7caffected
15.3(3)JPJ8aaffected
15.3(3)JPJ9affected
15.3(3)JPJ10affected
15.3(3)JPJ11affected
15.3(3)JPKaffected
15.3(3)JPK1affected
15.3(3)JPK2affected
15.3(3)JPK3affected
15.3(3)JPK4affected
15.3(3)JPK5affected
15.3(3)JPK6affected
15.3(3)JPK7affected
15.3(3)JPK8affected
15.3(3)JPK9affected
15.3(3)JPLaffected
15.3(3)JPMaffected
15.3(3)JPNaffected
15.3(3)JPN1affected
15.3(3)JPN2affected
15.3(3)JPN3affected
15.3(3)JPN4affected
15.3(3)JPN5affected
15.3(3)JPN6affected
15.3(3)JPOaffected
15.3(3)JPPaffected
15.3(3)JPQaffected
15.3(3)JPQ1affected
15.3(3)JPQ2affected
15.3(3)JPQ3affected
15.3(3)JPQ4affected
15.3(3)JPRaffected
15.3(3)JPSaffected
15.3(3)JPTaffected
15.3(3)JPT1affected

Cisco Cisco IOS XE Software

3.3.0SEaffected
3.3.1SEaffected
3.3.2SEaffected
3.3.3SEaffected
3.3.4SEaffected
3.3.5SEaffected
3.5.0Eaffected
3.5.1Eaffected
3.5.2Eaffected
3.5.3Eaffected
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
3.6.0Eaffected
3.6.1Eaffected
3.6.2aEaffected
3.6.2Eaffected
3.6.3Eaffected
3.6.4Eaffected
3.6.5Eaffected
3.6.6Eaffected
3.6.5aEaffected
3.6.5bEaffected
3.6.7Eaffected
3.6.8Eaffected
3.6.7bEaffected
3.6.9Eaffected
3.6.10Eaffected
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
3.7.0Eaffected
3.7.1Eaffected
3.7.2Eaffected
3.7.3Eaffected
3.7.4Eaffected
3.7.5Eaffected
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
3.8.0Eaffected
3.8.1Eaffected
3.8.2Eaffected
3.8.3Eaffected
3.8.4Eaffected
3.8.5Eaffected
3.8.5aEaffected
3.8.6Eaffected
3.8.7Eaffected
3.8.8Eaffected
3.8.9Eaffected
3.8.10Eaffected
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
3.9.0Eaffected
3.9.1Eaffected
3.9.2Eaffected
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
3.10.0Eaffected
3.10.1Eaffected
3.10.0cEaffected
3.10.2Eaffected
3.10.3Eaffected
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
3.11.0Eaffected
3.11.1Eaffected
3.11.2Eaffected
3.11.3Eaffected
3.11.1aEaffected
3.11.4Eaffected
3.11.3aEaffected
3.11.5Eaffected
3.11.6Eaffected
3.11.7Eaffected
3.11.8Eaffected
3.11.9Eaffected
3.11.10Eaffected
3.11.11Eaffected
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
17.10.1affected
17.10.1aaffected
17.10.1baffected
17.8.1affected
17.8.1aaffected
17.9.1affected
17.9.1waffected
17.9.2affected
17.9.1aaffected
17.9.1xaffected
17.9.1yaffected
17.9.3affected
17.9.2aaffected
17.9.1x1affected
17.9.3aaffected
17.9.4affected
17.9.1y1affected
17.9.5affected
17.9.4aaffected
17.9.5aaffected
17.9.5baffected
17.9.6affected
17.9.6aaffected
17.9.5eaffected
17.11.1affected
17.11.1aaffected
17.12.1affected
17.12.1waffected
17.12.1aaffected
17.12.1xaffected
17.12.2affected
17.12.3affected
17.12.2aaffected
17.12.1yaffected
17.12.1zaffected
17.12.4affected
17.12.3aaffected
17.12.1z1affected
17.12.1z2affected
17.12.4aaffected
17.12.4baffected
17.13.1affected
17.13.1aaffected
17.14.1affected
17.14.1aaffected
17.11.99SWaffected
17.15.1affected
17.15.1waffected
17.15.1aaffected
17.15.2affected
17.15.1baffected
17.15.1xaffected
17.15.2caffected
17.15.2aaffected
17.15.2baffected
17.16.1affected
17.16.1aaffected

References

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