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Vulnerability record · CVE-2014-1576 · published 15 October 2014

CVE-2014-1576: Mozilla thunderbird memory buffer overflow vulnerability

Mozilla · Thunderbird

Heap-based buffer overflow in the nsTransformedTextRun function in Mozilla Firefox before 33.0, Firefox ESR 31.x before 31.2, and Thunderbird 31.x before 31.2 allows remote attackers to execute arbitrary code via Cascading Style Sheets (CSS) token sequences that trigger changes to capitalization style.

7.5 CVSS 2.0 High EPSS 5.1% · top 7.9% CWE-119 · Memory buffer overflow
7.5CVSS 2.0 base score
5.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
52References
17 Jun 2026Last modified by NVD

Description

Heap-based buffer overflow in the nsTransformedTextRun function in Mozilla Firefox before 33.0, Firefox ESR 31.x before 31.2, and Thunderbird 31.x before 31.2 allows remote attackers to execute arbitrary code via Cascading Style Sheets (CSS) token sequences that trigger changes to capitalization style.

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

Affected products

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

References

LinkTags
http://lists.fedoraproject.org/pipermail/package-announce/2014-November/141796.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/141085.html
http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00024.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
http://lists.opensuse.org/opensuse-updates/2014-11/msg00000.html
http://lists.opensuse.org/opensuse-updates/2014-11/msg00001.html
http://lists.opensuse.org/opensuse-updates/2014-11/msg00002.html
http://lists.opensuse.org/opensuse-updates/2014-11/msg00003.html
http://rhn.redhat.com/errata/RHSA-2014-1635.html
http://secunia.com/advisories/61387
http://secunia.com/advisories/61854
http://secunia.com/advisories/62021
http://secunia.com/advisories/62022
http://secunia.com/advisories/62023
http://www.debian.org/security/2014/dsa-3050
http://www.debian.org/security/2014/dsa-3061
http://www.mozilla.org/security/announce/2014/mfsa2014-75.html Vendor Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
http://www.securityfocus.com/bid/70430
http://www.securitytracker.com/id/1031028
http://www.securitytracker.com/id/1031030
http://www.ubuntu.com/usn/USN-2372-1
http://www.ubuntu.com/usn/USN-2373-1
https://advisories.mageia.org/MGASA-2014-0421.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1041512
https://security.gentoo.org/glsa/201504-01
http://lists.fedoraproject.org/pipermail/package-announce/2014-November/141796.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/141085.html
http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00024.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
http://lists.opensuse.org/opensuse-updates/2014-11/msg00000.html
http://lists.opensuse.org/opensuse-updates/2014-11/msg00001.html
http://lists.opensuse.org/opensuse-updates/2014-11/msg00002.html
http://lists.opensuse.org/opensuse-updates/2014-11/msg00003.html
http://rhn.redhat.com/errata/RHSA-2014-1635.html
http://secunia.com/advisories/61387
http://secunia.com/advisories/61854
http://secunia.com/advisories/62021
http://secunia.com/advisories/62022
http://secunia.com/advisories/62023

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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-2014-1576), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.