CVE-2015-6324: Cisco Adaptive Security Appliance Software

High severity, CVSS 7.1. EPSS: 1.9% chance of exploitation in the next 30 days.

The DHCPv6 relay implementation in Cisco Adaptive Security Appliance (ASA) software 9.0 before 9.0(4.37), 9.1 before 9.1(6.6), 9.2 before 9.2(4), 9.3 before 9.3(3.5), and 9.4 before 9.4(2) allows remote attackers to cause a denial of service (device reload) via crafted DHCPv6 packets, aka Bug IDs CSCus56252 and CSCus57142.

Affected products

• Cisco Adaptive Security Appliance Software: version 9.0.1 only; version 9.0.2 only; version 9.0.2.10 only; version 9.0.3 only; version 9.0.3.6 only; version 9.0.3.8 only; …

Published 2015-10-25. Last modified 2026-06-17.