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Fencer Vulns
high 8.8

CVE-2016-5131 json

Use-after-free vulnerability in libxml2 through 2.9.4, as used in Google Chrome before 52.0.2743.82, allows remote attackers to cause a den…

published 2016-07-23 10 y ago modified 2026-10-14 25 d ago also EUVD-2016-6082

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

Use-after-free vulnerability in libxml2 through 2.9.4, as used in Google Chrome before 52.0.2743.82, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the XPointer range-to function.

Patch / fix

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • libxml2 Debian 14, Debian 13, Debian 12 2.9.4+dfsg1-2.1

debian advisories DEBIAN-CVE-2016-5131

  • libxml2 Ubuntu 14.04 LTS 2.9.1+dfsg1-3ubuntu4.9
  • libxml2 Ubuntu 16.04 LTS 2.9.3+dfsg1-1ubuntu0.2
  • oxide-qt Ubuntu 14.04 LTS 1.16.5-0ubuntu0.14.04.1
  • oxide-qt Ubuntu 16.04 LTS 1.16.5-0ubuntu0.16.04.1
  • chromium-browser Ubuntu 14.04 LTS 52.0.2743.116-0ubuntu0.14.04.1.1134
  • chromium-browser Ubuntu 16.04 LTS 52.0.2743.116-0ubuntu0.16.04.1.1250

ubuntu advisories UBUNTU-CVE-2016-5131

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

  • libxml2 RHEL 7 2.9.1-6.el7.4
  • libxml2-python RHEL 7 2.9.1-6.el7.4
  • chromium-browser RHEL 6 EXTRAS 52.0.2743.82-1.el6

red hat advisories RHSA-2020:1190RHSA-2016:1485

  • libxml2 SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +6 more 2.9.4-46.12.1
  • python-libxml2 SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +4 more 2.9.4-46.12.1
  • libxml2 SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 2.7.6-0.77.10.1
  • libxml2-python SLES for SAP 11 SP4, SLES 11 SP4 2.7.6-0.77.10.1

suse advisories SUSE-SU-2018:0401-1SUSE-SU-2018:0395-1

  • 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
  • chromium openSUSE Tumbleweed 55.0.2883.75-3.1
  • rubygem-nokogiri openSUSE Tumbleweed 1.13.3-1.1
  • chromium openSUSE Tumbleweed 113.0.5672.92-1.1
  • ruby3.2-rubygem-nokogiri openSUSE Tumbleweed 1.13.9-1.7
  • chromium Package Hub 12 52.0.2743.82-89.1

opensuse advisories openSUSE-SU-2026:10356-1openSUSE-SU-2025:14697-1openSUSE-SU-2024:14174-1openSUSE-SU-2024:10171-1openSUSE-SU-2024:11912-1openSUSE-SU-2024:12948-1

  • libxml2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +20 more 2.9.4-r1

alpine advisories ALPINE-CVE-2016-5131

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libxml2 Arch Linux 2.9.4+12+ge905f08-1

arch linux advisories AVG-56

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-2016-5131 updated cvss 8.8

libxml2: Use after free triggered by XPointer paths beginning with range-to

  • Red Hat Enterprise Linux 5 libxml2 Red Hat Enterprise Linux 6 libxml2, libxml2-python
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 mingw-libxml2, mingw32-libxml2, mingw64-libxml2 Red Hat JBoss Core Services libxml2
    affected: no fix available
  • Red Hat JBoss Enterprise Web Server 3 libxml2
    affected: no fix planned “Will not fix”
  • Red Hat Ansible Tower 3.5 for RHEL 7 Server ansible-tower-35/ansible-tower 3.5.6-1
    fixed: vendor fix RHBA-2020:1539
  • Red Hat Ansible Tower 3.6 for RHEL 7 ansible-tower-36/ansible-tower 3.6.4-1
    fixed: vendor fix RHBA-2020:1540
  • Red Hat Enterprise Linux Client (v. 7) libxml2 2.9.1-6.el7.4, libxml2-python 2.9.1-6.el7.4 Red Hat Enterprise Linux Client Optional (v. 7) libxml2-devel 2.9.1-6.el7.4, libxml2-static 2.9.1-6.el7.4, libxml2-debuginfo 2.9.1-6.el7.4 Red Hat Enterprise Linux ComputeNode (v. 7) libxml2 2.9.1-6.el7.4, libxml2-python 2.9.1-6.el7.4 Red Hat Enterprise Linux ComputeNode Optional (v. 7) libxml2-devel 2.9.1-6.el7.4, libxml2-static 2.9.1-6.el7.4, libxml2-debuginfo 2.9.1-6.el7.4
    fixed: vendor fix RHSA-2020:1190
  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 52.0.2743.82-1.el6
    fixed: vendor fix RHSA-2016:1485
  • Red Hat Enterprise Linux Server (v. 7) libxml2 2.9.1-6.el7.4, libxml2-python 2.9.1-6.el7.4 Red Hat Enterprise Linux Server Optional (v. 7) libxml2-static 2.9.1-6.el7.4, libxml2-debuginfo 2.9.1-6.el7.4
    fixed: vendor fix RHSA-2020:1190
show 5 more
  • Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 52.0.2743.82-1.el6
    fixed: vendor fix RHSA-2016:1485
  • Red Hat Enterprise Linux Workstation (v. 7) libxml2 2.9.1-6.el7.4, libxml2-python 2.9.1-6.el7.4 Red Hat Enterprise Linux Workstation Optional (v. 7) libxml2-static 2.9.1-6.el7.4, libxml2-debuginfo 2.9.1-6.el7.4
    fixed: vendor fix RHSA-2020:1190
  • Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 52.0.2743.82-1.el6
    fixed: vendor fix RHSA-2016:1485
  • Red Hat JBoss Core Services
    fixed: vendor fix RHSA-2018:2486
  • Red Hat Enterprise Linux 8 libxml2, python3-libxml2
    not affected: vulnerable code not present

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

cisa ICSA-23-348-10 updated cvss 8.8

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
11 mo ago

Exploit prediction

2.25% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns 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.