CVE-2012-4663: Cisco 5500 Series Adaptive Security Appliance

High severity, CVSS 7.1. EPSS: 1.7% chance of exploitation in the next 30 days.

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(2.25), 8.4 before 8.4(2.5), and 8.5 before 8.5(1.13) and the Firewall Services Module (FWSM) 4.1 before 4.1(7) in Cisco Catalyst 6500 series switches and 7600 series routers allows remote attackers to cause a denial of service (device reload) via a crafted DCERPC packet, aka Bug IDs CSCtr21346 and CSCtr27521.

Affected products

• Cisco 5500 Series Adaptive Security Appliance
• Cisco 7600 Router
• Cisco Adaptive Security Appliance Software: version 8.3(1) only; version 8.3(2) only; version 8.4 only; version 8.4(1) only; version 8.4(1.11) only; version 8.4(2) only; …
• Cisco Catalyst 6500
• Cisco Catalyst 6503-E
• Cisco Catalyst 6504-E
• Cisco Catalyst 6506-E
• Cisco Catalyst 6509-E
• Cisco Catalyst 6509-Neb-A
• Cisco Catalyst 6509-V-E
• Cisco Catalyst 6513
• Cisco Catalyst 6513-E

Published 2012-10-29. Last modified 2026-06-16.