Input validation error in Cisco Systems, Inc products - CVE-2025-20154
Published: May 9, 2025
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the Two-Way Active Measurement Protocol (TWAMP) server feature. A remote attacker can send specially crafted TWAMP control packets and perform a denial of service (DoS) attack.
Affected software
Cisco IOS XE
Cisco IOS Software
How to mitigate CVE-2025-20154
Cisco IOS XE - addressed in versions 16.6.1, 16.6.1a, 16.6.2, 16.6.2s, 16.6.3, 16.6.4, 16.6.4s, 16.6.4a, 16.6.5, 16.6.5a, 16.6.5b, 16.6.6, 16.6.7, 16.6.7a, 16.6.8, 16.6.9, 16.6.10, 16.7.1, 16.7.1a, 16.7.1b, 16.7.2, 16.7.3, 16.7.4, 16.8.1, 16.8.1c, 16.8.1d, 16.8.1e, 16.8.1s, 16.8.1a, 16.8.1b, 16.8.2, 16.8.3, 16.9.1, 16.9.1c, 16.9.1d, 16.9.1s, 16.9.1a, 16.9.1b, 16.9.2, 16.9.2s, 16.9.2a, 16.9.3, 16.9.3h, 16.9.3s, 16.9.3a, 16.9.4, 16.9.4c, 16.9.5, 16.9.5f, 16.9.6, 16.9.7, 16.9.8, 16.9.8a, 16.9.8b, 16.10.1, 16.10.1c, 16.10.1d, 16.10.1e, 16.10.1f, 16.10.1g, 16.10.1i, 16.10.1s, 16.10.1a, 16.10.1b, 16.10.2, 16.10.3, 16.11.1, 16.11.1c, 16.11.1s, 16.11.1a, 16.11.1b, 16.11.2, 16.12.1, 16.12.1c, 16.12.1s, 16.12.1t, 16.12.1v, 16.12.1w, 16.12.1x, 16.12.1y, 16.12.1z, 16.12.1z1, 16.12.1z2, 16.12.1a, 16.12.2, 16.12.2s, 16.12.2t, 16.12.2a, 16.12.3, 16.12.3s, 16.12.3a, 16.12.4, 16.12.4a, 16.12.5, 16.12.5a, 16.12.5 b, 16.12.6, 16.12.6a, 16.12.7, 16.12.8, 16.12.9, 16.12.10, 16.12.10a, 16.12.11, 16.12.12, 17.1.1, 17.1.1s, 17.1.1t, 17.1.1a, 17.1.2, 17.1.3, 17.2.1, 17.2.1v, 17.2.1LA, 17.2.1a, 17.2.1r, 17.2.2, 17.2.3, 17.3.1, 17.3.1w, 17.3.1x, 17.3.1z, 17.3.1a, 17.3.2, 17.3.2a, 17.3.3, 17.3.3a, 17.3.4, 17.3.4c, 17.3.4a, 17.3.4 b, 17.3.5, 17.3.5a, 17.3.5b, 17.3.6, 17.3.7, 17.3.8, 17.3.8a, 17.4.1, 17.4.1c, 17.4.1a, 17.4.1b, 17.4.2, 17.4.2a, 17.5.1, 17.5.1c, 17.05.01c, 17.5.1a, 17.5.1b, 17.6.1, 17.6.1w, 17.6.1x, 17.6.1y, 17.6.1z, 17.6.1z1, 17.6.1a, 17.6.2, 17.6.3, 17.6.3a, 17.6.4, 17.6.5, 17.6.5a, 17.6.6, 17.6.6a, 17.6.7, 17.6.8, 17.6.8a, 17.7.1, 17.7.1a, 17.7.1b, 17.7.2, 17.8.1, 17.8.1a, 17.9.1, 17.9.1w, 17.9.1x, 17.9.1x1, 17.9.1y, 17.9.1y1, 17.9.1a, 17.9.2, 17.9.2a, 17.9.3, 17.9.3a, 17.9.4, 17.9.4a, 17.9.5, 17.9.5c, 17.9.5d, 17.9.5a, 17.9.5b, 17.9.6, 17.9.6a, 17.10.1, 17.10.1a, 17.10.1b, 17.11.1, 17.11.1a, 17.12.1, 17.12.1w, 17.12.1x, 17.12.1y, 17.12.1z, 17.12.1z1, 17.12.2, 17.12.2a, 17.12.02a, 17.12.3, 17.12.3a, 17.12.4, 17.13.1, 17.13.1a, 17.14.1, 17.14.1a, 17.15.1, 17.15.1w, 17.15.1a, 17.15.1b
Cisco IOS Software - addressed in versions Dublin-17.12.5, Cupertino-17.9.6, 16.12.13, 17.9.6, 17.9.6a, 17.9.6b, 17.9.7, 17.9.7a, 17.12.1z2, 17.12.1z3, 17.12.5, 17.12.5a, 17.15.1x, 17.15.1y, 17.15.2, 17.15.2c, 17.15.2a, 17.15.2b, 17.15.3, 17.16.1, 17.16.1a, 17.17.1