SB2025050934 - Denial of service in Cisco IOS, IOS XE and IOS XR Software
Published: May 9, 2025
Security Bulletin ID
SB2025050934
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2025-20154)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
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.
Remediation
Install update from vendor's website.