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CVE-2015-0813

18
FAUCET Score

CVE-2015-0813 is a use-after-free vulnerability in the AppendElements function affecting Mozilla Firefox, Firefox ESR, and Thunderbird on Linux when using the Fluendo MP3 plugin for GStreamer. This flaw allows remote attackers to execute arbitrary code or cause a denial of service via a crafted MP3 file. With a CVSS score of 5.1 (medium), it requires high attack complexity (AC:H) but can lead to partial confidentiality, integrity, and availability impacts (C:P/I:P/A:P). There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available, though it has received some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 31.5.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
<= 36.0.4CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
<= 31.5CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.1MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.26%
Probability of exploitation in next 30 days
EPSS Percentile
91.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0526 is in the 90th percentile among its peer group of 19,956 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:31.6.0-1.el7_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:31.6.0-2.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:31.6.0-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:31.6.0-2.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:31.6.0-1.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:31.6.0-2.el7_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: xulrunner-0:31.6.0-2.el7_1
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2015-0813Critical

Mozilla: Use-after-free when using the Fluendo MP3 GStreamer plugin (MFSA 2015-31)

Mar 31, 2015

References

lists.opensuse.org / opensuse-security-announce/2015-04/msg00003.html
lists.opensuse.org / opensuse-security-announce/2015-04/msg00006.html
lists.opensuse.org / opensuse-security-announce/2015-05/msg00012.html
lists.opensuse.org / opensuse-security-announce/2015-07/msg00031.html
rhn.redhat.com / errata/RHSA-2015-0766.html
rhn.redhat.com / errata/RHSA-2015-0771.html
bugzilla.mozilla.org / show_bug.cgi
security.gentoo.org / glsa/201512-10
debian.org / security/2015/dsa-3211
debian.org / security/2015/dsa-3212
mozilla.org / security/announce/2015/mfsa2015-31.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2015-2511959.html
securityfocus.com / bid/73463
securitytracker.com / id/1031996
securitytracker.com / id/1032000
ubuntu.com / usn/USN-2550-1
ubuntu.com / usn/USN-2552-1