CVE-2011-3297

CVE-2011-3297 describes a denial-of-service vulnerability affecting Cisco Firewall Services Module (FWSM) versions 3.1, 3.2, 4.0, and 4.1 when specific authentication configurations are in use. An unauthenticated remote attacker can trigger a module crash by sending a high volume of authentication requests. With a CVSS score of 7.8, this vulnerability is considered high severity due to its network-based attack vector, low attack complexity, and complete denial-of-service impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.