Buffer overflow in Cisco IOS XE - CVE-2025-20149
Published: September 24, 2025
Vulnerability identifier: #VU116084
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-20149
CWE-ID: CWE-120
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco IOS XE
Cisco IOS XE
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service attack.
The vulnerability exists due to improper input validation in CLI. A local user can pass specially crafted data to the affected CLI command, trigger buffer overflow and perform a denial of service attack.
How to mitigate CVE-2025-20149
Install updates from vendor's website.