Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-4448

34
FAUCET Score

CVE-2016-4448 is a critical format string vulnerability in libxml2 versions prior to 2.9.4, impacting a wide range of products from vendors like Apple, HP, Microsoft, and Oracle. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network without user interaction, potentially leading to complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, its high severity and widespread impact warrant attention.

Impacted Technologies

VendorProductVersion(s)CPE
3.0CPE matchmatch criteria
cpe:2.3:a:hp:icewall_federation_agent:3.0:*:*:*:*:*:*:*
<= 2.2.1CPE matchmatch criteria
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
< 10.11.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
<= 2.9.3CPE matchmatch criteria
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
< 5.2.1CPE matchmatch criteria
cpe:2.3:a:apple:icloud:*:*:*:*:*:*:*:*

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
7.04%
Probability of exploitation in next 30 days
EPSS Percentile
93.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0704 is in the 89th percentile among its peer group of 36,862 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 (6)

redhatpatch availablevia redhat_api
Product: Text-Only JBCS
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libxml2-0:2.7.6-21.el6_8.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libxml2-0:2.9.1-6.el7_2.3
View patch
oraclevendor investigatingvia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat JBoss Enterprise Web Server 3Fixed in: libxml2
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libxml2

Vendor Advisories (1)

redhatCVE-2016-4448Moderate

libxml2: Format string vulnerability

May 23, 2016

References

lists.apple.com / archives/security-announce/2016/Jul/msg00000.html
Mailing ListRelease Notes
lists.apple.com / archives/security-announce/2016/Jul/msg00001.html
Mailing ListRelease Notes
lists.apple.com / archives/security-announce/2016/Jul/msg00002.html
Mailing ListRelease Notes
lists.apple.com / archives/security-announce/2016/Jul/msg00003.html
Mailing ListRelease Notes
lists.apple.com / archives/security-announce/2016/Jul/msg00005.html
Mailing ListRelease Notes
rhn.redhat.com / errata/RHSA-2016-2957.html
Third Party Advisory
access.redhat.com / errata/RHSA-2016:1292
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
git.gnome.org / browse/libxml2/commit
Vendor Advisory
git.gnome.org / browse/libxml2/commit
Vendor Advisory
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
Third Party Advisory
kc.mcafee.com / corporate/index
Third Party Advisory
support.apple.com / HT206899
Release Notes
support.apple.com / HT206901
Release Notes
support.apple.com / HT206902
Release Notes
support.apple.com / HT206903
Release Notes
support.apple.com / HT206904
Release Notes
support.apple.com / HT206905
Release Notes
tenable.com / security/tns-2016-18
Third Party Advisory
openwall.com / lists/oss-security/2016/05/25/2
Mailing ListThird Party Advisory
oracle.com / technetwork/topics/security/bulletinjul2016-3090568.html
Third Party Advisory
oracle.com / technetwork/topics/security/linuxbulletinjul2016-3090544.html
Third Party Advisory
oracle.com / technetwork/topics/security/ovmbulletinjul2016-3090546.html
Vendor Advisory
securityfocus.com / bid/90856
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036348
Third Party AdvisoryVDB Entry
slackware.com / security/viewer.php
Third Party Advisory
xmlsoft.org / news.html
Release Notes