CVE-2012-0388

CVE-2012-0388 describes a memory leak vulnerability in the H.323 inspection feature of Cisco IOS Zone-Based Firewall, affecting versions 12.4, 15.0, 15.1, and 15.2. This flaw allows unauthenticated remote attackers to trigger a denial of service, leading to memory exhaustion or device reloads, by sending malformed H.323 traffic through the firewall. With a CVSS score of 7.8 (High), the vulnerability is easily exploitable over the network with low attack complexity and no authentication required, resulting in a complete loss of availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.