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Vulnerability record · CVE-2013-0771 · published 13 January 2013

CVE-2013-0771: Mozilla firefox out-of-bounds write vulnerability

Mozilla · Firefox

Heap-based buffer overflow in the gfxTextRun::ShrinkToLigatureBoundaries function in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.1, Thunderbird before 17.0.2, Thunderbird ESR 17.x before 17.0.1, and SeaMonkey before 2.15 allows remote attackers to execute arbitrary code via a crafted document.

9.3 CVSS 2.0 High EPSS 5.3% · top 7.7% CWE-787 · Out-of-bounds write
9.3CVSS 2.0 base score
5.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
20References
16 Jun 2026Last modified by NVD

Description

Heap-based buffer overflow in the gfxTextRun::ShrinkToLigatureBoundaries function in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.1, Thunderbird before 17.0.2, Thunderbird ESR 17.x before 17.0.1, and SeaMonkey before 2.15 allows remote attackers to execute arbitrary code via a crafted document.

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

Affected products

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

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00006.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00007.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00010.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00017.html Mailing ListThird Party Advisory
http://www.mozilla.org/security/announce/2013/mfsa2013-02.html Vendor Advisory
http://www.ubuntu.com/usn/USN-1681-1 Third Party Advisory
http://www.ubuntu.com/usn/USN-1681-2 Third Party Advisory
http://www.ubuntu.com/usn/USN-1681-4 Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=785555 Issue TrackingPatchVendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17019 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00006.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00007.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00010.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00017.html Mailing ListThird Party Advisory
http://www.mozilla.org/security/announce/2013/mfsa2013-02.html Vendor Advisory
http://www.ubuntu.com/usn/USN-1681-1 Third Party Advisory
http://www.ubuntu.com/usn/USN-1681-2 Third Party Advisory
http://www.ubuntu.com/usn/USN-1681-4 Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=785555 Issue TrackingPatchVendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17019 Third Party Advisory

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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-2013-0771), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.