What’s Vulnerable › Vulnerabilities

CVE-2012-1947

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2012-06-05 · updated 2026-06-16
• Weakness: CWE-119

Description

Heap-based buffer overflow in the utf16_to_isolatin1 function in Mozilla Firefox 4.x through 12.0, Firefox ESR 10.x before 10.0.5, Thunderbird 5.0 through 12.0, Thunderbird ESR 10.x before 10.0.5, and SeaMonkey before 2.10 allows remote attackers to execute arbitrary code via vectors that trigger a character-set conversion failure.

Affected products

• Mozilla Firefox: 4.0, 4.0-beta1, 4.0-beta10, 4.0-beta11, 4.0-beta12, 4.0-beta2 (+27)
• Mozilla Seamonkey: through 2.9; 1.0, 1.0-alpha, 1.0-beta, 1.0.1, 1.0.2, 1.0.3 (+107)
• Mozilla Thunderbird: 5.0, 6.0, 6.0.1, 6.0.2, 7.0, 7.0.1 (+10)
• Mozilla Thunderbird ESR: 10.0, 10.0.1, 10.0.2, 10.0.3, 10.0.4

References

• http://lists.opensuse.org/opensuse-security-announce/2012-06/msg00012.html
• http://lists.opensuse.org/opensuse-security-announce/2012-06/msg00015.html
• http://rhn.redhat.com/errata/RHSA-2012-0710.html
• http://rhn.redhat.com/errata/RHSA-2012-0715.html
• http://www.debian.org/security/2012/dsa-2488
• http://www.debian.org/security/2012/dsa-2489
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:088
• http://www.mozilla.org/security/announce/2012/mfsa2012-40.html
• https://bugzilla.mozilla.org/show_bug.cgi?id=744541
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16911
• http://lists.opensuse.org/opensuse-security-announce/2012-06/msg00012.html
• http://lists.opensuse.org/opensuse-security-announce/2012-06/msg00015.html

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