Read the docs
TI-2016-01616 Aliases CVE-2016-1762GHSA-r6h3-3q3x-3wcr

The xmlNextChar function in libxml2 before 2.9.4 allows remote attackers to cause a…

Priority MEDIUM 44CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Partial Red Hat: 17 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

The xmlNextChar function in libxml2 before 2.9.4 allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted XML document.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.06134 93rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 17 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 30

CPEVersionsRoleVendor
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*before 9.1VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 9.3VulnerableApple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*before 10.11.4VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 9.2VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 2.2VulnerableApple
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*15.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
  • cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 9.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 9.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.11.4 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 9.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 2.2 Vulnerable ·Apple
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Versions 15.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
Show 20 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*before 2.9.4Vulnerablexmlsoft
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*7.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:*7.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*7.5VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2:*:*:*:*:*:*:*7.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:*up to 7.5.2.10; after 7.5.2.11, up to 7.6.2.3VulnerableMcAfee
  • cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:* Versions before 2.9.4 Vulnerable ·xmlsoft
  • cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:* Versions up to 7.5.2.10; after 7.5.2.11, up to 7.6.2.3 Vulnerable ·McAfee

Remediation

Red Hat 2 advisories

  • RHSA-2016:2957 Released 2016-12-15 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP 2.4.23 Release
    • Red Hat JBoss Core Services
  • RHSA-2016:1292 Released 2016-06-23 · Red Hat rating Important
    libxml2 security update
    • Red Hat Enterprise Linux Client (v. 7) libxml2-2.9.1-6.el7_2.3, libxml2-python-2.9.1-6.el7_2.3
    • Red Hat Enterprise Linux Client Optional (v. 7) libxml2-devel-2.9.1-6.el7_2.3, libxml2-static-2.9.1-6.el7_2.3
    • Red Hat Enterprise Linux ComputeNode (v. 7) libxml2-2.9.1-6.el7_2.3, libxml2-python-2.9.1-6.el7_2.3
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) libxml2-devel-2.9.1-6.el7_2.3, libxml2-static-2.9.1-6.el7_2.3
    • Red Hat Enterprise Linux Desktop (v. 6) libxml2-2.7.6-21.el6_8.1, libxml2-python-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux Desktop Optional (v. 6) libxml2-devel-2.7.6-21.el6_8.1, libxml2-static-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux HPC Node (v. 6) libxml2-2.7.6-21.el6_8.1, libxml2-python-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) libxml2-devel-2.7.6-21.el6_8.1, libxml2-static-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux Server (v. 6) libxml2-2.7.6-21.el6_8.1, libxml2-2.7.6-21.el6_8.1.ppc, libxml2-devel-2.7.6-21.el6_8.1 +2
    • Red Hat Enterprise Linux Server (v. 7) libxml2-2.9.1-6.el7_2.3, libxml2-2.9.1-6.el7_2.3.ppc, libxml2-devel-2.9.1-6.el7_2.3 +2
    • Red Hat Enterprise Linux Server Optional (v. 6) libxml2-static-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux Server Optional (v. 7) libxml2-static-2.9.1-6.el7_2.3, libxml2-static-2.9.1-6.el7_2.3.ppc
    • Red Hat Enterprise Linux Workstation (v. 6) libxml2-2.7.6-21.el6_8.1, libxml2-devel-2.7.6-21.el6_8.1, libxml2-python-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux Workstation (v. 7) libxml2-2.9.1-6.el7_2.3, libxml2-devel-2.9.1-6.el7_2.3, libxml2-python-2.9.1-6.el7_2.3
    • Red Hat Enterprise Linux Workstation Optional (v. 6) libxml2-static-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libxml2-static-2.9.1-6.el7_2.3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat JBoss Enterprise Web Server 3AffectedNo fix yet
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2016:1292
Red Hat JBoss Core ServicesFixed RHSA-2016:2957

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-1762
  2. 2026-10-03 Alias added: GHSA-r6h3-3q3x-3wcr

References

Exploit 1

Patch 2

Advisory 17

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences