CVE-2016-4463
Stack-based buffer overflow in Apache Xerces-C++ before 3.1.4 allows context-dependent attackers to cause a denial of service via a deeply nested DTD.
02 Description
Stack-based buffer overflow in Apache Xerces-C++ before 3.1.4 allows context-dependent attackers to cause a denial of service via a deeply nested DTD.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 14.13% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 96.5% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-07-08 19:00Z10 YR AGO
- Last updated
- 2024-08-06 00:32Z2 YR AGO
- Reserved
- 2016-05-02
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- e11fac35341487148edc8975142faf21f9544130340d4dd65d192ff7134dcfcf
05 Affected products
06 References
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- issues.apache.orghttps://issues.apache.org/jira/browse/XERCESC-2069
- issues.apache.orghttps://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=10510&version=12336069
- access.redhat.comRHSA-2018:3335https://access.redhat.com/errata/RHSA-2018:3335
- www.debian.orgDSA-3610https://www.debian.org/security/2016/dsa-3610
- www.securitytracker.com1036211http://www.securitytracker.com/id/1036211
- lists.opensuse.orgopenSUSE-SU-2016:2232http://lists.opensuse.org/opensuse-updates/2016-09/msg00013.html
- access.redhat.comRHSA-2018:3506https://access.redhat.com/errata/RHSA-2018:3506
- access.redhat.comRHSA-2018:3514https://access.redhat.com/errata/RHSA-2018:3514
- www.securityfocus.com91501http://www.securityfocus.com/bid/91501
- xerces.apache.orghttp://xerces.apache.org/xerces-c/secadv/CVE-2016-4463.txt
- www.securityfocus.com20160629 CVE-2016-4463: Apache Xerces-C XML Parser Crashes on Malformed DTDhttp://www.securityfocus.com/archive/1/538784/100/0/threaded
- packetstormsecurity.comhttp://packetstormsecurity.com/files/137714/Apache-Xerces-C-XML-Parser-Crash.html
- lists.opensuse.orgopenSUSE-SU-2016:1808http://lists.opensuse.org/opensuse-updates/2016-07/msg00053.html
- www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2020.html
07 Fixed in
Debian 12
- xerces-c Fixed in 3.1.3+debian-2.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- xerces-c Fixed in 3.1.3+debian-2.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- xerces-c Fixed in 3.1.3+debian-2.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- xerces-c Fixed in 3.1.1-5.1+deb8u3build0.14.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- xerces-c Fixed in 3.1.3+debian-1ubuntu0.1~esm1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.