CVE-2012-4661

Stack-based buffer overflow in the DCERPC inspection engine on Cisco Adaptive Security Appliances (ASA) 5500 series devices, and the ASA Services Module (ASASM) in Cisco Catalyst 6500 series devices, with software 8.3 before 8.3(2.34), 8.4 before 8.4(4.4), 8.5 before 8.5(1.13), and 8.6 before 8.6(1.3) and the Firewall Services Module (FWSM) 4.1 before 4.1(9) in Cisco Catalyst 6500 series switches and 7600 series routers might allow remote attackers to execute arbitrary code via a crafted DCERPC packet, aka Bug IDs CSCtr21359 and CSCtr27522.

Published: 2012-10-29 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-4661 is rated Moderate Risk (62.2/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 4.05%). 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-2012-4661

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 9.66% 4.05% -5.62%
2 2025-03-30 6.86% 9.66% +2.81%
3 2025-03-29 — 6.86% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-4661

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.0 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:P/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:P)
Partial integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 9.5 [email protected]

Weakness enumeration for CVE-2012-4661

Affected software / configurations for CVE-2012-4661

Vendor Product Version Raw CPE
cisco adaptive_security_appliance_software 8.3\(1\) cpe:2.3:o:cisco:adaptive_security_appliance_software:8.3\(1\):*:*:*:*:*:*:*
cisco adaptive_security_appliance_software 8.3\(2\) cpe:2.3:o:cisco:adaptive_security_appliance_software:8.3\(2\):*:*:*:*:*:*:*
cisco adaptive_security_appliance_software 8.4 cpe:2.3:o:cisco:adaptive_security_appliance_software:8.4:*:*:*:*:*:*:*
cisco adaptive_security_appliance_software 8.4\(1\) cpe:2.3:o:cisco:adaptive_security_appliance_software:8.4\(1\):*:*:*:*:*:*:*
cisco adaptive_security_appliance_software 8.4\(1.11\) cpe:2.3:o:cisco:adaptive_security_appliance_software:8.4\(1.11\):*:*:*:*:*:*:*
cisco adaptive_security_appliance_software 8.4\(2\) cpe:2.3:o:cisco:adaptive_security_appliance_software:8.4\(2\):*:*:*:*:*:*:*
cisco adaptive_security_appliance_software 8.4\(2.11\) cpe:2.3:o:cisco:adaptive_security_appliance_software:8.4\(2.11\):*:*:*:*:*:*:*
cisco adaptive_security_appliance_software 8.5 cpe:2.3:o:cisco:adaptive_security_appliance_software:8.5:*:*:*:*:*:*:*
cisco adaptive_security_appliance_software 8.5\(1\) cpe:2.3:o:cisco:adaptive_security_appliance_software:8.5\(1\):*:*:*:*:*:*:*
cisco adaptive_security_appliance_software 8.5\(1.4\) cpe:2.3:o:cisco:adaptive_security_appliance_software:8.5\(1.4\):*:*:*:*:*:*:*
cisco adaptive_security_appliance_software 8.6 cpe:2.3:o:cisco:adaptive_security_appliance_software:8.6:*:*:*:*:*:*:*
cisco adaptive_security_appliance_software 8.6\(1\) cpe:2.3:o:cisco:adaptive_security_appliance_software:8.6\(1\):*:*:*:*:*:*:*
cisco 5500_series_adaptive_security_appliance — cpe:2.3:h:cisco:5500_series_adaptive_security_appliance:*:*:*:*:*:*:*:*
cisco 7600_router — cpe:2.3:h:cisco:7600_router:*:*:*:*:*:*:*:*
cisco catalyst_6500 — cpe:2.3:h:cisco:catalyst_6500:*:*:*:*:*:*:*:*
cisco catalyst_6503-e — cpe:2.3:h:cisco:catalyst_6503-e:-:*:*:*:*:*:*:*
cisco catalyst_6504-e — cpe:2.3:h:cisco:catalyst_6504-e:-:*:*:*:*:*:*:*
cisco catalyst_6506-e — cpe:2.3:h:cisco:catalyst_6506-e:-:*:*:*:*:*:*:*
cisco catalyst_6509-e — cpe:2.3:h:cisco:catalyst_6509-e:-:*:*:*:*:*:*:*
cisco catalyst_6509-neb-a — cpe:2.3:h:cisco:catalyst_6509-neb-a:-:*:*:*:*:*:*:*
cisco catalyst_6509-v-e — cpe:2.3:h:cisco:catalyst_6509-v-e:-:*:*:*:*:*:*:*
cisco catalyst_6513 — cpe:2.3:h:cisco:catalyst_6513:-:*:*:*:*:*:*:*
cisco catalyst_6513-e — cpe:2.3:h:cisco:catalyst_6513-e:-:*:*:*:*:*:*:*

References for CVE-2012-4661

cvelogic Threat Intelligence