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Vulnerability record · CVE-2015-2731 · published 6 July 2015

CVE-2015-2731: Mozilla firefox vulnerability

Mozilla · Firefox

Use-after-free vulnerability in the CSPService::ShouldLoad function in the microtask implementation in Mozilla Firefox before 39.0, Firefox ESR 38.x before 38.1, and Thunderbird before 38.1 allows remote attackers to execute arbitrary code by leveraging client-side JavaScript that triggers removal of a DOM object on the basis of a Content Policy.

10.0 CVSS 2.0 High EPSS 5.8% · top 7.2%
10.0CVSS 2.0 base score
5.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
28References
17 Jun 2026Last modified by NVD

Description

Use-after-free vulnerability in the CSPService::ShouldLoad function in the microtask implementation in Mozilla Firefox before 39.0, Firefox ESR 38.x before 38.1, and Thunderbird before 38.1 allows remote attackers to execute arbitrary code by leveraging client-side JavaScript that triggers removal of a DOM object on the basis of a Content Policy.

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/2015-07/msg00025.html
http://rhn.redhat.com/errata/RHSA-2015-1207.html
http://rhn.redhat.com/errata/RHSA-2015-1455.html
http://www.debian.org/security/2015/dsa-3300
http://www.mozilla.org/security/announce/2015/mfsa2015-63.html Vendor Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html Third Party Advisory
http://www.securityfocus.com/bid/75541
http://www.securitytracker.com/id/1032783
http://www.securitytracker.com/id/1032784
http://www.ubuntu.com/usn/USN-2656-1
http://www.ubuntu.com/usn/USN-2656-2
https://bugzilla.mozilla.org/show_bug.cgi?id=1149891 Issue Tracking
https://security.gentoo.org/glsa/201512-10
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html
http://rhn.redhat.com/errata/RHSA-2015-1207.html
http://rhn.redhat.com/errata/RHSA-2015-1455.html
http://www.debian.org/security/2015/dsa-3300
http://www.mozilla.org/security/announce/2015/mfsa2015-63.html Vendor Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html Third Party Advisory
http://www.securityfocus.com/bid/75541
http://www.securitytracker.com/id/1032783
http://www.securitytracker.com/id/1032784
http://www.ubuntu.com/usn/USN-2656-1
http://www.ubuntu.com/usn/USN-2656-2
https://bugzilla.mozilla.org/show_bug.cgi?id=1149891 Issue Tracking
https://security.gentoo.org/glsa/201512-10

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Source: NIST National Vulnerability Database (record CVE-2015-2731), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.