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-2016-4738

29
FAUCET Score

CVE-2016-4738 describes a memory corruption vulnerability in libxslt, impacting Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3. This flaw allows remote attackers to execute arbitrary code or cause a denial of service through a specially crafted website. With a CVSS score of 8.8 (High), it presents a significant risk, requiring user interaction (UI:R) but with low attack complexity (AC:L) over a network (AV:N), potentially leading to high confidentiality, integrity, and availability impacts (C:H/I:H/A:H). Despite its high severity and a FAUCET Risk Score of 82/100, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 10.0CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 10.12.0CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
< 10.0CPE matchmatch criteria
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
< 3.0CPE matchmatch criteria
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.15%
Probability of exploitation in next 30 days
EPSS Percentile
89.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0415 is in the 90th percentile among its peer group of 14,855 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Patches (11)

applevendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libxslt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libxslt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libxslt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: libxslt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: libxslt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: libxslt
redhatend of lifevia redhat_api
Product: Red Hat Gluster Storage 3.1Fixed in: libxslt
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 10 (Newton)Fixed in: libxslt
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: libxslt
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka)Fixed in: libxslt

Vendor Advisories (1)

redhatCVE-2016-4738Moderate

libxslt: Heap overread due to an empty decimal-separator

Oct 12, 2016

References

lists.apple.com / archives/security-announce/2016/Sep/msg00006.html
Mailing ListVendor Advisory
lists.apple.com / archives/security-announce/2016/Sep/msg00008.html
Mailing ListVendor Advisory
lists.apple.com / archives/security-announce/2016/Sep/msg00010.html
Mailing ListVendor Advisory
lists.apple.com / archives/security-announce/2016/Sep/msg00011.html
Mailing ListVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/SK4YNISS22MJY22YX5I6V2U63QZAUEHA
support.apple.com / HT207141
Vendor Advisory
support.apple.com / HT207142
Vendor Advisory
support.apple.com / HT207143
Vendor Advisory
support.apple.com / HT207170
Vendor Advisory
debian.org / security/2016/dsa-3709
Third Party Advisory
securityfocus.com / bid/93054
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036858
Third Party AdvisoryVDB Entry