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Fencer Vulns
critical 9.8

CVE-2016-2099 json

Use-after-free vulnerability in validators/DTD/DTDScanner.cpp in Apache Xerces C++ 3.1.3 and earlier allows context-dependent attackers to…

published 2016-05-13 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3202

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.6%
EPSS 6.6% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

Use-after-free vulnerability in validators/DTD/DTDScanner.cpp in Apache Xerces C++ 3.1.3 and earlier allows context-dependent attackers to have unspecified impact via an invalid character in an XML document.

Patch / fix

  • xerces-c Debian 14, Debian 13, Debian 12 3.1.3+debian-2

debian advisories DEBIAN-CVE-2016-2099

  • xerces-c Ubuntu 14.04 LTS 3.1.1-5.1+deb8u2build0.14.04.1
  • xerces-c Ubuntu Pro 16.04 LTS 3.1.3+debian-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2016-2099

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

  • xerces-c SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 3.1.1-12.3

suse advisories SUSE-SU-2016:2154-1

  • xerces-c openSUSE Tumbleweed 3.1.4-1.3

opensuse advisories openSUSE-SU-2024:10039-1

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-2016-2099 updated cvss 5.8

xerces-c: Use-after-free in heap on specially crafted XML input

  • Red Hat Enterprise Linux 6 xerces-c Red Hat Enterprise Linux 7 xerces-c Red Hat Enterprise MRG 2 xerces-c Red Hat Enterprise MRG 3 xerces-c Red Hat OpenShift Enterprise 2 xerces-c
    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

6.63% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

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.