CVE-2012-2118

CVE-2012-2118 describes a critical format string vulnerability in the LogVHdrMessageVerb function within os/log.c of X.Org X11 version 1.11. This flaw allows an unauthenticated attacker to trigger a denial of service or potentially execute arbitrary code by injecting format string specifiers into an input device name. With a CVSS score of 10.0, this vulnerability presents a severe risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.