CVE-2025-20173

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.

• cisco ios 12.2\(33\)sre • cisco ios 12.2\(33\)sre0a • cisco ios 12.2\(33\)sre1 • cisco ios 12.2\(33\)sre2 • cisco ios 12.2\(33\)sre3 • cisco ios 12.2\(33\)sre4 • cisco ios 12.2\(33\)sre5 • cisco ios 12.2\(33\)sre6 • cisco ios 12.2\(33\)sre7 • cisco ios 12.2\(33\)sre7a • cisco ios 12.2\(33\)sre8 • cisco ios 12.2\(33\)sre9 • cisco ios 12.2\(33\)sre9a • cisco ios 12.2\(33\)sre10 • cisco ios 12.2\(33\)sre11 • cisco ios 12.2\(33\)sre12 • cisco ios 12.2\(33\)sre13 • cisco ios 12.2\(33\)sre14 • cisco ios 12.2\(33\)sre15 • cisco ios 12.2\(33\)sre15a • cisco ios 12.2\(46\)sg • cisco ios 12.2\(46\)sg1 • cisco ios 12.2\(50\)se • cisco ios 12.2\(50\)se1 • cisco ios 12.2\(50\)se2 • cisco ios 12.2\(50\)se3 • cisco ios 12.2\(50\)se4 • cisco ios 12.2\(50\)se5 • cisco ios 12.2\(50\)sg • cisco ios 12.2\(50\)sg1 • cisco ios 12.2\(50\)sg2 • cisco ios 12.2\(50\)sg3 • cisco ios 12.2\(50\)sg4 • cisco ios 12.2\(50\)sg5 • cisco ios 12.2\(50\)sg6 • cisco ios 12.2\(50\)sg7 • cisco ios 12.2\(50\)sg8 • cisco ios 12.2\(50\)sq • cisco ios 12.2\(50\)sq1 • cisco ios 12.2\(50\)sq2 • cisco ios 12.2\(50\)sq3 • cisco ios 12.2\(50\)sq4 • cisco ios 12.2\(50\)sq5 • cisco ios 12.2\(50\)sq6 • cisco ios 12.2\(50\)sq7 • cisco ios 12.2\(52\)ex • cisco ios 12.2\(52\)ex1 • cisco ios 12.2\(52\)ey • cisco ios 12.2\(52\)ey1 • cisco ios 12.2\(52\)ey1b • cisco ios 12.2\(52\)ey1c • cisco ios 12.2\(52\)ey2 • cisco ios 12.2\(52\)ey2a • cisco ios 12.2\(52\)ey3 • cisco ios 12.2\(52\)ey3a • cisco ios 12.2\(52\)ey4 • cisco ios 12.2\(52\)se • cisco ios 12.2\(52\)se1 • cisco ios 12.2\(52\)sg • cisco ios 12.2\(52\)xo … and 1351 more