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CVE-2015-7942

19
FAUCET Score

CVE-2015-7942 is a denial-of-service vulnerability in the libxml2 library, specifically within the xmlParseConditionalSections function, affecting products from Apple, Canonical, Debian, HP, and xmlsoft. Attackers can trigger an out-of-bounds read and crash by providing crafted XML data. With a CVSS score of 6.8, it is a medium-severity vulnerability that can be exploited remotely with medium attack complexity, potentially leading to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.0CPE matchmatch criteria
cpe:2.3:a:hp:icewall_federation_agent:3.0:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:hp:icewall_file_manager:3.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
<= 9.2.1CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.74%
Probability of exploitation in next 30 days
EPSS Percentile
90.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0474 is in the 89th percentile among its peer group of 19,958 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, 0.0 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 (7)

redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3.0Fixed in: libxml2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libxml2-0:2.7.6-20.el6_7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libxml2-0:2.9.1-6.el7_2.2
View patch
applevendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: libxml2
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libxml2
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 2Fixed in: libxml2

Vendor Advisories (1)

redhatCVE-2015-7942Moderate

libxml2: heap-based buffer overflow in xmlParseConditionalSections()

Oct 22, 2015

References

lists.apple.com / archives/security-announce/2016/Mar/msg00000.html
Mailing ListThird Party Advisory
lists.apple.com / archives/security-announce/2016/Mar/msg00001.html
Mailing ListThird Party Advisory
lists.apple.com / archives/security-announce/2016/Mar/msg00002.html
Mailing ListThird Party Advisory
lists.apple.com / archives/security-announce/2016/Mar/msg00004.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2016-February/177341.html
lists.fedoraproject.org / pipermail/package-announce/2016-February/177381.html
lists.opensuse.org / opensuse-updates/2015-12/msg00120.html
lists.opensuse.org / opensuse-updates/2016-01/msg00031.html
marc.info
Third Party Advisory
rhn.redhat.com / errata/RHSA-2015-2549.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2015-2550.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-1089.html
bugzilla.gnome.org / show_bug.cgi
ExploitIssue Tracking
bugzilla.gnome.org / show_bug.cgi
ExploitIssue Tracking
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
Third Party Advisory
security.gentoo.org / glsa/201701-37
support.apple.com / HT206166
Vendor Advisory
support.apple.com / HT206167
Vendor Advisory
support.apple.com / HT206168
Vendor Advisory
support.apple.com / HT206169
Vendor Advisory
debian.org / security/2015/dsa-3430
Third Party Advisory
openwall.com / lists/oss-security/2015/10/22/5
openwall.com / lists/oss-security/2015/10/22/8
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/79507
securitytracker.com / id/1034243
ubuntu.com / usn/USN-2812-1
Third Party Advisory
xmlsoft.org / news.html