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Vulnerability record · CVE-2012-1951 · published 18 July 2012

CVE-2012-1951: Mozilla firefox vulnerability

Mozilla · Firefox

Use-after-free vulnerability in the nsSMILTimeValueSpec::IsEventBased function in Mozilla Firefox 4.x through 13.0, Firefox ESR 10.x before 10.0.6, Thunderbird 5.0 through 13.0, Thunderbird ESR 10.x before 10.0.6, and SeaMonkey before 2.11 allows remote attackers to cause a denial of service (heap memory corruption) or possibly execute arbitrary code by interacting with objects used for SMIL Timing.

10.0 CVSS 2.0 High EPSS 5.5% · top 7.4% CWE-399 · CWE-399
10.0CVSS 2.0 base score
5.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
48References
16 Jun 2026Last modified by NVD

Description

Use-after-free vulnerability in the nsSMILTimeValueSpec::IsEventBased function in Mozilla Firefox 4.x through 13.0, Firefox ESR 10.x before 10.0.6, Thunderbird 5.0 through 13.0, Thunderbird ESR 10.x before 10.0.6, and SeaMonkey before 2.11 allows remote attackers to cause a denial of service (heap memory corruption) or possibly execute arbitrary code by interacting with objects used for SMIL Timing.

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

Affected products

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

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00013.html
http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00016.html
http://osvdb.org/83997
http://rhn.redhat.com/errata/RHSA-2012-1088.html
http://secunia.com/advisories/49965
http://secunia.com/advisories/49968
http://secunia.com/advisories/49972
http://secunia.com/advisories/49977
http://secunia.com/advisories/49979
http://secunia.com/advisories/49992
http://secunia.com/advisories/49993
http://secunia.com/advisories/49994
http://www.mozilla.org/security/announce/2012/mfsa2012-44.html Vendor Advisory
http://www.securityfocus.com/bid/54578
http://www.securitytracker.com/id?1027256
http://www.securitytracker.com/id?1027257
http://www.securitytracker.com/id?1027258
http://www.ubuntu.com/usn/USN-1509-1
http://www.ubuntu.com/usn/USN-1509-2
http://www.ubuntu.com/usn/USN-1510-1
https://bugzilla.mozilla.org/show_bug.cgi?id=752902
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16077
http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00013.html
http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00016.html
http://osvdb.org/83997
http://rhn.redhat.com/errata/RHSA-2012-1088.html
http://secunia.com/advisories/49965
http://secunia.com/advisories/49968
http://secunia.com/advisories/49972
http://secunia.com/advisories/49977
http://secunia.com/advisories/49979
http://secunia.com/advisories/49992
http://secunia.com/advisories/49993
http://secunia.com/advisories/49994
http://www.mozilla.org/security/announce/2012/mfsa2012-44.html Vendor Advisory
http://www.securityfocus.com/bid/54578

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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-2012-1951), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.