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CVE-2015-2716

26
FAUCET Score

CVE-2015-2716 describes a buffer overflow vulnerability in the XML parser of Mozilla Firefox (before 38.0), Firefox ESR (before 31.7), and Thunderbird (before 31.7), also affecting products from Novell, OpenSUSE, and Oracle. This vulnerability carries a high CVSS score of 7.5, indicating it can be exploited remotely with low complexity to achieve partial confidentiality, integrity, and availability impacts. While no active exploitation (KEV) or public exploit code (Metasploit, Nuclei, ExploitDB) has been identified, the vulnerability received some community discussion and media coverage at the time of its disclosure.

Impacted Technologies

VendorProductVersion(s)CPE
<= 37.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:12.0:*:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:o:novell:suse_linux_enterprise_desktop:12.0:*:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:*:*:*:*:*:*:*
13.1CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*

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
7.42%
Probability of exploitation in next 30 days
EPSS Percentile
93.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0742 is in the 90th percentile among its peer group of 51,551 CVEs.

Social Chatter

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 (13)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.7 Extended Update SupportFixed in: expat-0:2.1.0-11.el7_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Tower 3.5 for RHEL 7Fixed in: ansible-tower-35/ansible-tower:3.5.6-1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Tower 3.6 for RHEL 7Fixed in: ansible-tower-36/ansible-tower:3.6.4-1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:38.0-4.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:31.7.0-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:38.0-4.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:31.7.0-1.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:38.0-3.el7_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:31.7.0-1.ael7b_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: expat-0:2.1.0-11.el7
View patch
mozillavendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: expat
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: expat

Vendor Advisories (1)

redhatCVE-2015-2716Critical

expat: Integer overflow leading to buffer overflow in XML_GetBuffer()

May 12, 2015

References

lists.opensuse.org / opensuse-security-announce/2015-05/msg00012.html
lists.opensuse.org / opensuse-security-announce/2015-05/msg00054.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2015-06/msg00000.html
lists.opensuse.org / opensuse-security-announce/2015-07/msg00031.html
lists.opensuse.org / opensuse-updates/2015-05/msg00036.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2015-0988.html
rhn.redhat.com / errata/RHSA-2015-1012.html
bugzilla.mozilla.org / show_bug.cgi
Issue Tracking
hg.mozilla.org / releases/mozilla-esr31/rev/2f3e78643f5c
kc.mcafee.com / corporate/index
security.gentoo.org / glsa/201605-06
mozilla.org / en-US/security/known-vulnerabilities/thunderbird
tenable.com / security/tns-2016-20
debian.org / security/2015/dsa-3260
debian.org / security/2015/dsa-3264
mozilla.org / security/announce/2015/mfsa2015-54.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
Third Party Advisory
securityfocus.com / bid/74611
ubuntu.com / usn/USN-2602-1
ubuntu.com / usn/USN-2603-1