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CVE-2015-7210

20
FAUCET Score

CVE-2015-7210 is a use-after-free vulnerability in Mozilla Firefox versions prior to 43.0 and Firefox ESR 38.x before 38.5, also impacting Fedora and OpenSUSE. This critical vulnerability, with a CVSS score of 7.5, allows remote attackers to execute arbitrary code by manipulating WebRTC data channel closure. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability received some community discussion and media coverage at the time of its disclosure.

Impacted Technologies

VendorProductVersion(s)CPE
<= 42.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
38.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:38.0:*:*:*:*:*:*:*
38.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:38.0.1:*:*:*:*:*:*:*
38.0.5CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:38.0.5:*:*:*:*:*:*:*
38.1.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:38.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.31%
Probability of exploitation in next 30 days
EPSS Percentile
90.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0431 is in the 83rd percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:38.5.0-2.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:38.5.0-2.el6_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:38.5.0-3.el7_2
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2015-7210Critical

Mozilla: Use-after-free in WebRTC when datachannel is used after being destroyed (MFSA 2015-138)

Dec 16, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-December/174083.html
lists.fedoraproject.org / pipermail/package-announce/2015-December/174253.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00021.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00022.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00023.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00038.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00049.html
lists.opensuse.org / opensuse-updates/2015-12/msg00104.html
lists.opensuse.org / opensuse-updates/2016-02/msg00007.html
lists.opensuse.org / opensuse-updates/2016-02/msg00008.html
rhn.redhat.com / errata/RHSA-2015-2657.html
bugzilla.mozilla.org / show_bug.cgi
security.gentoo.org / glsa/201512-10
debian.org / security/2015/dsa-3422
mozilla.org / security/announce/2015/mfsa2015-138.html
Vendor Advisory
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/79283
securitytracker.com / id/1034426
ubuntu.com / usn/USN-2833-1