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Vulnerability record · CVE-2015-4497 · published 29 August 2015

CVE-2015-4497: Mozilla firefox vulnerability

Mozilla · Firefox

Use-after-free vulnerability in the CanvasRenderingContext2D implementation in Mozilla Firefox before 40.0.3 and Firefox ESR 38.x before 38.2.1 allows remote attackers to execute arbitrary code by leveraging improper interaction between resize events and changes to Cascading Style Sheets (CSS) token sequences for a CANVAS element.

10.0 CVSS 2.0 High EPSS 8.0% · top 5.4%
10.0CVSS 2.0 base score
8.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
26References
17 Jun 2026Last modified by NVD

Description

Use-after-free vulnerability in the CanvasRenderingContext2D implementation in Mozilla Firefox before 40.0.3 and Firefox ESR 38.x before 38.2.1 allows remote attackers to execute arbitrary code by leveraging improper interaction between resize events and changes to Cascading Style Sheets (CSS) token sequences for a CANVAS element.

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

Affected products

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

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00013.html
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html
http://lists.opensuse.org/opensuse-updates/2015-09/msg00000.html
http://rhn.redhat.com/errata/RHSA-2015-1693.html
http://www.debian.org/security/2015/dsa-3345
http://www.mozilla.org/security/announce/2015/mfsa2015-94.html Vendor Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://www.securityfocus.com/bid/76502
http://www.securitytracker.com/id/1033397
http://www.ubuntu.com/usn/USN-2723-1
http://www.zerodayinitiative.com/advisories/ZDI-15-406
https://bugzilla.mozilla.org/show_bug.cgi?id=1164766
https://bugzilla.mozilla.org/show_bug.cgi?id=1175278
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00013.html
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html
http://lists.opensuse.org/opensuse-updates/2015-09/msg00000.html
http://rhn.redhat.com/errata/RHSA-2015-1693.html
http://www.debian.org/security/2015/dsa-3345
http://www.mozilla.org/security/announce/2015/mfsa2015-94.html Vendor Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://www.securityfocus.com/bid/76502
http://www.securitytracker.com/id/1033397
http://www.ubuntu.com/usn/USN-2723-1
http://www.zerodayinitiative.com/advisories/ZDI-15-406
https://bugzilla.mozilla.org/show_bug.cgi?id=1164766
https://bugzilla.mozilla.org/show_bug.cgi?id=1175278

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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-2015-4497), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.