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Fencer Intel
high 8.8

CVE-2016-4738 json

libxslt in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 allows remote attackers to execute arbitrary code o…

published 2016-09-25 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5723

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.1%
EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

libxslt in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

Patch / fix

  • apple iphone_os 10.0
  • apple mac_os_x 10.12.0
  • apple tvos 10.0
  • apple watchos 3.0
  • libxslt Debian 14, Debian 13, Debian 12 1.1.29-2

debian advisories DEBIAN-CVE-2016-4738

  • libxslt Ubuntu 14.04 LTS 1.1.28-2ubuntu0.1
  • libxslt Ubuntu 16.04 LTS 1.1.28-2.1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2016-4738

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libxslt SLES for SAP 12 SP2, SLES for SAP 12 SP1, SLES for Raspberry Pi 12 SP2 +6 more 1.1.28-16.1
  • libxslt SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 1.1.24-19.33.1
  • libxslt-python SLE Software Development Kit 11 SP4 1.1.24-19.33.3

suse advisories SUSE-SU-2017:1313-1SUSE-SU-2017:1282-1

  • rubygem-nokogiri openSUSE Tumbleweed 1.18.9-1.4
  • rubygem-nokogiri openSUSE Tumbleweed 1.18.2-1.1
  • rubygem-nokogiri openSUSE Tumbleweed 1.15.5-1.5
  • libxslt openSUSE Tumbleweed 1.1.34-3.2
  • rubygem-nokogiri openSUSE Tumbleweed 1.13.3-1.1
  • ruby3.2-rubygem-nokogiri openSUSE Tumbleweed 1.13.9-1.7

opensuse advisories openSUSE-SU-2026:10356-1openSUSE-SU-2025:14697-1openSUSE-SU-2024:14174-1openSUSE-SU-2024:11017-1openSUSE-SU-2024:11912-1openSUSE-SU-2024:13165-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-4738 updated cvss 6.5

libxslt: Heap overread due to an empty decimal-separator

  • Red Hat Enterprise Linux 5 libxslt Red Hat Enterprise Linux 6 libxslt, libxslt-python Red Hat Enterprise Linux 7 libxslt, libxslt-python Red Hat Enterprise Linux OpenStack Platform 6 (Juno) libxslt Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) libxslt-python Red Hat Enterprise MRG 2 libxslt
    +4 more products
    Red Hat OpenStack Platform 8 (Liberty) libxslt-python Red Hat OpenStack Platform 9 (Mitaka) libxslt-python Red Hat OpenStack Platform 10 (Newton) libxslt-python Red Hat Storage 3 libxslt, libxslt-python
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.13% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.