CVE-2012-0353: Cisco 5500 Series Adaptive Security Appliance

High severity, CVSS 7.1. EPSS: 2.5% chance of exploitation in the next 30 days.

The UDP 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 8.0 before 8.0(5.25), 8.1 before 8.1(2.50), 8.2 before 8.2(5.5), 8.3 before 8.3(2.22), 8.4 before 8.4(2.1), and 8.5 before 8.5(1.2) does not properly handle flows, which allows remote attackers to cause a denial of service (device reload) via a crafted series of (1) IPv4 or (2) IPv6 UDP packets, aka Bug ID CSCtq10441.

Affected products

• Cisco 5500 Series Adaptive Security Appliance
• Cisco Adaptive Security Appliance Software: version 8.0 only; version 8.0(2) only; version 8.0(3) only; version 8.0(4) only; version 8.0(5) only; version 8.0.2 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 2012-03-15. Last modified 2026-06-16.