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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 14.2%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 14.25% probability · 97th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- apache/xerces-c\+\+ · debian/debian linux
- Source
- secalert@redhat.com
EPSS moved from 11.3% on 21 September 2026 to 14.2% on 4 November 2026, peaking at 16.2% on 12 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://lists.opensuse.org/opensuse-updates/2016-07/msg00053.html
- http://lists.opensuse.org/opensuse-updates/2016-09/msg00013.html
- http://packetstormsecurity.com/files/137714/Apache-Xerces-C-XML-Parser-Crash.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- http://www.securityfocus.com/archive/1/538784/100/0/threaded
- http://www.securityfocus.com/bid/91501
- http://www.securitytracker.com/id/1036211
- http://xerces.apache.org/xerces-c/secadv/CVE-2016-4463.txt
- https://access.redhat.com/errata/RHSA-2018:3335
- https://access.redhat.com/errata/RHSA-2018:3506
- https://access.redhat.com/errata/RHSA-2018:3514
- https://issues.apache.org/jira/browse/XERCESC-2069
- https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=10510&version=12336069
- https://www.debian.org/security/2016/dsa-3610
- https://www.oracle.com/security-alerts/cpuapr2020.html
- http://lists.opensuse.org/opensuse-updates/2016-07/msg00053.html
- http://lists.opensuse.org/opensuse-updates/2016-09/msg00013.html
- http://packetstormsecurity.com/files/137714/Apache-Xerces-C-XML-Parser-Crash.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- http://www.securityfocus.com/archive/1/538784/100/0/threaded
- http://www.securityfocus.com/bid/91501
- http://www.securitytracker.com/id/1036211
- http://xerces.apache.org/xerces-c/secadv/CVE-2016-4463.txt
- https://access.redhat.com/errata/RHSA-2018:3335
- https://access.redhat.com/errata/RHSA-2018:3506
- https://access.redhat.com/errata/RHSA-2018:3514
- https://issues.apache.org/jira/browse/XERCESC-2069
- https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=10510&version=12336069
- https://www.debian.org/security/2016/dsa-3610
- https://www.oracle.com/security-alerts/cpuapr2020.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.