How severe is CVE-2013-3466?

CVE-2013-3466 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2013-3466 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3466?

CVE-2013-3466 primarily affects Cisco Secure Access Control Server. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-3466?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2013-3466 published?

CVE-2013-3466 was published on 2013-08-29 and last updated on 2026-06-16.

CVE-2013-3466

CVE-2013-3466 is a critical-severity vulnerability in Cisco Secure Access Control Server with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Cisco Secure Access Control Server
Published: 2013-08-29
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2013-3466?: CVE-2013-3466 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2013-3466 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3466?: CVE-2013-3466 primarily affects Cisco Secure Access Control Server. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3466?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2013-3466 published?: CVE-2013-3466 was published on 2013-08-29 and last updated on 2026-06-16.

References

Affected products (10)

cpe:2.3:a:cisco:secure_access_control_server:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_access_control_server:4.2.1.15.9:*:*:*:*:*:*:*

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