What’s Vulnerable › Vulnerabilities

CVE-2012-3958

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2012-08-29 · updated 2026-06-16
• Weakness: CWE-399

Description

Use-after-free vulnerability in the nsHTMLEditRules::DeleteNonTableElements function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Affected products

• Mozilla Firefox: through 14.0; 10.0, 10.0.1, 10.0.2, 10.0.3, 10.0.4, 10.0.5 (+144)
• Mozilla Seamonkey: through 2.11; 2.0, 2.0-alpha_1, 2.0-alpha_2, 2.0-alpha_3, 2.0-beta_1, 2.0-beta_2 (+72)
• Mozilla Thunderbird: through 14.0; 1.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5 (+95)
• Mozilla Thunderbird ESR: 10.0, 10.0.1, 10.0.2, 10.0.3, 10.0.4, 10.0.5 (+1)

References

• http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00028.html
• http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00011.html
• http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00014.html
• http://rhn.redhat.com/errata/RHSA-2012-1210.html
• http://rhn.redhat.com/errata/RHSA-2012-1211.html
• http://www.mozilla.org/security/announce/2012/mfsa2012-58.html
• http://www.securityfocus.com/bid/55323
• http://www.ubuntu.com/usn/USN-1548-1
• http://www.ubuntu.com/usn/USN-1548-2
• http://www.xerox.com/download/security/security-bulletin/16287-4d6b7b0c81f7b/cert_XRX13-003_v1.0.pdf
• https://bugzilla.mozilla.org/show_bug.cgi?id=772346
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16782

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