CVE-2025-20176
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.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco ios | 15.0\(1\)sy, 15.0\(1\)sy1, 15.0\(1\)sy2, 15.0\(1\)sy3, 15.0\(1\)sy4, 15.0\(1\)sy5, 15.0\(1\)sy6, 15.0\(1\)sy7, 15.0\(1\)sy7a, 15.0\(1\)sy8, 15.0\(1\)sy9, 15.0\(1\)sy10, 15.0\(2\)ea, 15.0\(2\)ea1, 15.0\(2\)ej, 15.0\(2\)ej1, 15.0\(2\)ek, 15.0\(2\)ek1, 15.0\(2\)ex, 15.0\(2\)ex1, 15.0\(2\)ex2, 15.0\(2\)ex3, 15.0\(2\)ex4, 15.0\(2\)ex5, 15.0\(2\)ex8, 15.0\(2\)ex10, 15.0\(2\)ex11, 15.0\(2\)ex12, 15.0\(2\)ex13, 15.0\(2\)ey, 15.0\(2\)ey1, 15.0\(2\)ey2, 15.0\(2\)ey3, 15.0\(2\)ez, 15.0\(2\)se, 15.0\(2\)se1, 15.0\(2\)se2, 15.0\(2\)se3, 15.0\(2\)se4, 15.0\(2\)se5, 15.0\(2\)se6, 15.0\(2\)se7, 15.0\(2\)se8, 15.0\(2\)se9, 15.0\(2\)se10, 15.0\(2\)se10a, 15.0\(2\)se11, 15.0\(2\)se12, 15.0\(2\)se13, 15.0\(2a\)ex5, 15.1\(1\)sy, 15.1\(1\)sy1, 15.1\(1\)sy2, 15.1\(1\)sy3, 15.1\(1\)sy4, 15.1\(1\)sy5, 15.1\(1\)sy6, 15.1\(2\)sy, 15.1\(2\)sy1, 15.1\(2\)sy2, 15.1\(2\)sy3, 15.1\(2\)sy4, 15.1\(2\)sy4a, 15.1\(2\)sy5, 15.1\(2\)sy6, 15.1\(2\)sy7, 15.1\(2\)sy8, 15.1\(2\)sy9, 15.1\(2\)sy10, 15.1\(2\)sy11, 15.1\(2\)sy12, 15.1\(2\)sy13, 15.1\(2\)sy14, 15.1\(2\)sy15, 15.1\(2\)sy16, 15.2\(1\)e, 15.2\(1\)e1, 15.2\(1\)e2, 15.2\(1\)e3, 15.2\(1\)ey, 15.2\(1\)sy, 15.2\(1\)sy0a, 15.2\(1\)sy1, 15.2\(1\)sy1a, 15.2\(1\)sy2, 15.2\(1\)sy3, 15.2\(1\)sy4, 15.2\(1\)sy5, 15.2\(1\)sy6, 15.2\(1\)sy7, 15.2\(1\)sy8, 15.2\(2\)e, 15.2\(2\)e1, 15.2\(2\)e2, 15.2\(2\)e3, 15.2\(2\)e4, 15.2\(2\)e5, 15.2\(2\)e5a, 15.2\(2\)e5b, 15.2\(2\)e6, 15.2\(2\)e7, 15.2\(2\)e8, 15.2\(2\)e9, 15.2\(2\)e10, 15.2\(2\)ea, 15.2\(2\)ea1, 15.2\(2\)ea2, 15.2\(2\)ea3, 15.2\(2\)eb, 15.2\(2\)eb1, 15.2\(2\)eb2, 15.2\(2\)sy, 15.2\(2\)sy1, 15.2\(2\)sy2, 15.2\(2\)sy3, 15.2\(2a\)e1, 15.2\(2a\)e2, 15.2\(3\)e, 15.2\(3\)e1, 15.2\(3\)e2, 15.2\(3\)e3, 15.2\(3\)e4, 15.2\(3\)ea, 15.2\(3a\)e, 15.2\(4\)e, 15.2\(4\)e1, 15.2\(4\)e2, 15.2\(4\)e3, 15.2\(4\)e4, 15.2\(4\)e5, 15.2\(4\)e6, 15.2\(4\)e7, 15.2\(4\)e8, 15.2\(4\)e9, 15.2\(4\)e10, 15.2\(4\)e10a, 15.2\(4\)e10d, 15.2\(4\)ea, 15.2\(4\)ea1, 15.2\(4\)ea3, 15.2\(4\)ea4, 15.2\(4\)ea5, 15.2\(4\)ea6, 15.2\(4\)ea7, 15.2\(4\)ea8, 15.2\(4\)ea9, 15.2\(4\)ea9a, 15.2\(4\)ec1, 15.2\(4\)ec2, 15.2\(5\)e, 15.2\(5\)e1, 15.2\(5\)e2, 15.2\(5\)e2c, 15.2\(5\)ea, 15.2\(5\)ex, 15.2\(5a\)e, 15.2\(5a\)e1, 15.2\(5b\)e, 15.2\(5c\)e, 15.2\(6\)e, 15.2\(6\)e0a, 15.2\(6\)e0c, 15.2\(6\)e1, 15.2\(6\)e2, 15.2\(6\)e2a, 15.2\(6\)e2b, 15.2\(6\)e3, 15.2\(6\)eb, 15.2\(7\)e, 15.2\(7\)e0a, 15.2\(7\)e0b, 15.2\(7\)e0s, 15.2\(7\)e1, 15.2\(7\)e1a, 15.2\(7\)e2, 15.2\(7\)e2a, 15.2\(7\)e3, 15.2\(7\)e3k, 15.2\(7\)e4, 15.2\(7\)e5, 15.2\(7\)e6, 15.2\(7\)e7, 15.2\(7\)e8, 15.2\(7\)e9, 15.2\(7\)e10, 15.2\(7\)e11, 15.2\(7a\)e0b, 15.2\(7b\)e0b, 15.2\(8\)e, 15.2\(8\)e1, 15.2\(8\)e2, 15.2\(8\)e3, 15.2\(8\)e4, 15.2\(8\)e5, 15.2\(8\)e6, 15.2\(8\)e7, 15.3\(1\)sy, 15.3\(1\)sy1, 15.3\(1\)sy2, 15.3\(3\)jd | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.