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Vulnerability record · CVE-2015-2733 · published 6 July 2015

CVE-2015-2733: Mozilla firefox vulnerability

Mozilla · Firefox

Use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox before 39.0 and Firefox ESR 31.x before 31.8 and 38.x before 38.1 allows remote attackers to execute arbitrary code via vectors involving attachment of an XMLHttpRequest object to a dedicated worker.

10.0 CVSS 2.0 High EPSS 6.2% · top 6.8%
10.0CVSS 2.0 base score
6.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
32References
17 Jun 2026Last modified by NVD

Description

Use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox before 39.0 and Firefox ESR 31.x before 31.8 and 38.x before 38.1 allows remote attackers to execute arbitrary code via vectors involving attachment of an XMLHttpRequest object to a dedicated worker.

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

Affected products

5 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://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00033.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00034.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
http://rhn.redhat.com/errata/RHSA-2015-1207.html
http://www.mozilla.org/security/announce/2015/mfsa2015-65.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=1169867 Issue Tracking
https://security.gentoo.org/glsa/201512-10
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00033.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00034.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
http://rhn.redhat.com/errata/RHSA-2015-1207.html
http://www.mozilla.org/security/announce/2015/mfsa2015-65.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=1169867 Issue Tracking
https://security.gentoo.org/glsa/201512-10

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Source: NIST National Vulnerability Database (record CVE-2015-2733), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.