CVE-2012-5424: Cisco Secure Access Control Server

Medium severity, CVSS 5.0. EPSS: 2.5% chance of exploitation in the next 30 days.

Cisco Secure Access Control System (ACS) 5.x before 5.2 Patch 11 and 5.3 before 5.3 Patch 7, when a certain configuration involving TACACS+ and LDAP is used, does not properly validate passwords, which allows remote attackers to bypass authentication by sending a valid username and a crafted password string, aka Bug ID CSCuc65634.

Affected products

• Cisco Secure Access Control Server: version 5.0 only; version 5.1 only; version 5.2 only; version 5.3 only

Published 2012-11-07. Last modified 2026-06-16.