Cisco Secure Access Control System (ACS) 5.x before 5.2 Patch 11 and 5.3 before 5.3 Patch…
Priority LOW 28CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.02452 84th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:secure_access_control_server:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_access_control_server:5.1:*:*:*:*:*:*:* | 5.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_access_control_server:5.2:*:*:*:*:*:*:* | 5.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_access_control_server:5.3:*:*:*:*:*:*:* | 5.3 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:secure_access_control_server:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_access_control_server:5.1:*:*:*:*:*:*:* Versions 5.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_access_control_server:5.2:*:*:*:*:*:*:* Versions 5.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_access_control_server:5.3:*:*:*:*:*:*:* Versions 5.3 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2012-5424
- 2026-10-03 Alias added: GHSA-m5mg-489p-j2jg
References
More Cisco Secure Access Control Server vulnerabilities
- TI-2005-00319 Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with… CVSS 2.0MEDIUM 5.0
- TI-2006-03972 Stack-based buffer overflow in the CSRadius service in Cisco Secure Access Control Server… CVSS 2.0HIGH 10.0
- TI-2004-00996 Cisco Secure Access Control Server for Windows (ACS Windows) and Cisco Secure Access… CVSS 2.0HIGH 10.0
- TI-2000-01044 Buffer overflow in CSAdmin module in CiscoSecure ACS Server 2.4(2) and earlier allows… CVSS 2.0HIGH 10.0
- TI-2000-01045 Buffer overflow in CiscoSecure ACS Server 2.4(2) and earlier allows remote attackers to… CVSS 2.0HIGH 10.0
- TI-2013-03026 The EAP-FAST authentication module in Cisco Secure Access Control Server (ACS) 4.x before… CVSS 2.0HIGH 9.3
Sources
- CVE-2012-5424 · CVE Program
- CVE-2012-5424 · NVD
- FIRST EPSS
- GHSA-m5mg-489p-j2jg · GitHub Advisory Database · CC BY 4.0
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