CVE-2012-1962

CVE-2012-1962 is a critical use-after-free vulnerability in the JSDependentString::undepend function affecting Mozilla Firefox 4.x-13.0, Firefox ESR 10.x before 10.0.6, Thunderbird 5.0-13.0, Thunderbird ESR 10.x before 10.0.6, and SeaMonkey before 2.11. This flaw allows remote attackers to trigger memory corruption, leading to denial of service or potentially arbitrary code execution. With a CVSS score of 10.0, it presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.