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Vulnerability record · CVE-2012-3971 · published 29 August 2012

CVE-2012-3971: Mozilla firefox memory buffer overflow vulnerability

Mozilla · Firefox

Summer Institute of Linguistics (SIL) Graphite 2, as used in Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via vectors related to the (1) Silf::readClassMap and (2) Pass::readPass functions.

10.0 CVSS 2.0 High EPSS 5.2% · top 7.8% CWE-119 · Memory buffer overflow
10.0CVSS 2.0 base score
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
20References
16 Jun 2026Last modified by NVD

Description

Summer Institute of Linguistics (SIL) Graphite 2, as used in Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via vectors related to the (1) Silf::readClassMap and (2) Pass::readPass functions.

AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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://www.mozilla.org/security/announce/2012/mfsa2012-64.html Vendor Advisory
http://www.securityfocus.com/bid/55304
http://www.ubuntu.com/usn/USN-1548-1
http://www.ubuntu.com/usn/USN-1548-2
https://bugzilla.mozilla.org/show_bug.cgi?id=753230
https://bugzilla.mozilla.org/show_bug.cgi?id=753623
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16062
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://www.mozilla.org/security/announce/2012/mfsa2012-64.html Vendor Advisory
http://www.securityfocus.com/bid/55304
http://www.ubuntu.com/usn/USN-1548-1
http://www.ubuntu.com/usn/USN-1548-2
https://bugzilla.mozilla.org/show_bug.cgi?id=753230
https://bugzilla.mozilla.org/show_bug.cgi?id=753623
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16062

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2012-3971), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.