CVE-2012-5424

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.

Published: 2012-11-07 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-5424 is rated Moderate Risk (50.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.45%). EPSS rose +2.01% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2012-5424

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.44% 2.45% +2.01%
2 2026-01-09 0.22% 0.44% +0.22%
3 2025-03-30 — 0.22% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-5424

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2012-5424

Affected software / configurations for CVE-2012-5424

Vendor Product Version Raw CPE
cisco secure_access_control_server 5.0 cpe:2.3:a:cisco:secure_access_control_server:5.0:*:*:*:*:*:*:*
cisco secure_access_control_server 5.1 cpe:2.3:a:cisco:secure_access_control_server:5.1:*:*:*:*:*:*:*
cisco secure_access_control_server 5.2 cpe:2.3:a:cisco:secure_access_control_server:5.2:*:*:*:*:*:*:*
cisco secure_access_control_server 5.3 cpe:2.3:a:cisco:secure_access_control_server:5.3:*:*:*:*:*:*:*

References for CVE-2012-5424

cvelogic Threat Intelligence