CVE-2013-3466

The EAP-FAST authentication module in Cisco Secure Access Control Server (ACS) 4.x before 4.2.1.15.11, when a RADIUS server configuration is enabled, does not properly parse user identities, which allows remote attackers to execute arbitrary commands via crafted EAP-FAST packets, aka Bug ID CSCui57636.

Published: 2013-08-29 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-3466 is rated High Risk (73.3/100): CVSS Critical severity, with high exploitation likelihood (EPSS 5.12%, 91th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +4.17% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize 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-2013-3466

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 0.95% 5.12% +4.17%
2 2026-05-22 0.72% 0.95% +0.23%
3 2025-03-30 — 0.72% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-3466

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2013-3466

Affected software / configurations for CVE-2013-3466

Vendor Product Version Raw CPE
cisco secure_access_control_server <= 4.2.1.15.10 cpe:2.3:a:cisco:secure_access_control_server:*:*:*:*:*:*:*:*
cisco secure_access_control_server 4.2.1.15.0 cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.0:*:*:*:*:*:*:*
cisco secure_access_control_server 4.2.1.15.1 cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.1:*:*:*:*:*:*:*
cisco secure_access_control_server 4.2.1.15.2 cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.2:*:*:*:*:*:*:*
cisco secure_access_control_server 4.2.1.15.3 cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.3:*:*:*:*:*:*:*
cisco secure_access_control_server 4.2.1.15.4 cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.4:*:*:*:*:*:*:*
cisco secure_access_control_server 4.2.1.15.6 cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.6:*:*:*:*:*:*:*
cisco secure_access_control_server 4.2.1.15.7 cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.7:*:*:*:*:*:*:*
cisco secure_access_control_server 4.2.1.15.8 cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.8:*:*:*:*:*:*:*
cisco secure_access_control_server 4.2.1.15.9 cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.9:*:*:*:*:*:*:*

References for CVE-2013-3466

cvelogic Threat Intelligence