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CVE-2015-8710

33
FAUCET Score

CVE-2015-8710 is a critical vulnerability affecting libxml2, specifically the htmlParseComment function, which can be triggered by an unclosed HTML comment. This flaw allows attackers to achieve denial of service through out-of-bounds heap memory access, potentially leading to application crashes, or to obtain sensitive information. With a CVSS score of 9.8, it presents a high-severity risk due to its network-based attack vector and low complexity, requiring no user interaction or privileges. Despite its criticality, there is no evidence of active exploitation, no known public exploit code, and minimal community discussion or media coverage, suggesting a low current threat landscape.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.9.3CPE matchmatch criteria
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.92%
Probability of exploitation in next 30 days
EPSS Percentile
91.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0493 is in the 85th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

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
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3.0Fixed in: libxml2
View patch
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-2015-8710Moderate

libxml2: out-of-bounds memory access when parsing an unclosed HTML comment

Apr 19, 2015

References

rhn.redhat.com / errata/RHSA-2016-1089.html
Third Party Advisory
bugzilla.gnome.org / show_bug.cgi
Issue Tracking
git.gnome.org / browse/libxml2/commit
Third Party Advisory
hackerone.com / reports/57125
Third Party Advisory
debian.org / security/2015/dsa-3430
Third Party Advisory
openwall.com / lists/oss-security/2015/04/19/4
Mailing ListPatch
openwall.com / lists/oss-security/2015/09/13/1
Mailing List
openwall.com / lists/oss-security/2015/12/31/7
Mailing List
securityfocus.com / bid/79811
Third Party AdvisoryVDB Entry