CVE-2023-20081 (adaptive_security_appliance, firepower_threat_defense, ios, ios_xe)

A vulnerability in the IPv6 DHCP (DHCPv6) client module of Cisco Adaptive Security Appliance (ASA) Software, Cisco Firepower Threat Defense (FTD) Software, Cisco IOS Software, and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of DHCPv6 messages. An attacker could exploit this vulnerability by sending crafted DHCPv6 messages to an affected device. A successful exploit could allow the attacker …

asa cisco cisco ios cisco ios xe client cve defense denial of service device dhcp dhcpv6 dos exploit firepower ios ipv6 messages security service software threat threat defense validation vulnerability