SB2025092463 - Local denial of service in Cisco IOS and IOS XE CLI
Published: September 24, 2025
Security Bulletin ID
SB2025092463
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2025-20149)
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.
Remediation
Install update from vendor's website.