CVE-2013-5513: Cisco Adaptive Security Appliance Software

High severity, CVSS 7.1. EPSS: 1.6% chance of exploitation in the next 30 days.

Cisco Adaptive Security Appliance (ASA) Software 8.2.x before 8.2(5.46), 8.3.x before 8.3(2.39), 8.4.x before 8.4(7), 8.5.x before 8.5(1.18), 8.6.x before 8.6(1.12), 8.7.x before 8.7(1.7), 9.0.x before 9.0(3.3), and 9.1.x before 9.1(1.8), when the DNS ALPI engine is enabled for TCP, allows remote attackers to cause a denial of service (device reload) via crafted TCP DNS packets, aka Bug ID CSCug03975.

Affected products

• Cisco Adaptive Security Appliance Software: version 8.2 only; version 8.2(1) only; version 8.2(2) only; version 8.2(3) only; version 8.2(3.9) only; version 8.2(4) only; …

Published 2013-10-13. Last modified 2026-06-16.