Vulnerability record · CVE-2016-4472 · published 30 June 2016

CVE-2016-4472: Libexpat project libexpat memory buffer overflow vulnerability

LLibexpat Project · Libexpat

The overflow protection in Expat is removed by compilers with certain optimization settings, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via crafted XML data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1283 and CVE-2015-2716.

8.1 CVSS 3.1 High EPSS 12% · top 4.0% CWE-119 · Memory buffer overflow

8.1CVSS 3.1 base score, v2 6.8

12%EPSS exploitation probability, 30 days

NoNot in CISA KEV

4Affected product versions listed by NVD

14References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Ubuntu Linux Canonical LLibexpat Libexpat Project MPolicy Auditor Mcafee

Python Python

References

Link	Tags
http://www.securityfocus.com/bid/91528	Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-3013-1	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1344251	Issue TrackingPatchThird Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10365	Third Party Advisory
https://security.gentoo.org/glsa/201701-21	Third Party Advisory
https://sourceforge.net/p/expat/code_git/ci/f0bec73b018caa07d3e75ec8dd967f3785d71bde	PatchThird Party Advisory
https://www.tenable.com/security/tns-2016-20	Third Party Advisory
http://www.securityfocus.com/bid/91528	Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-3013-1	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1344251	Issue TrackingPatchThird Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10365	Third Party Advisory
https://security.gentoo.org/glsa/201701-21	Third Party Advisory
https://sourceforge.net/p/expat/code_git/ci/f0bec73b018caa07d3e75ec8dd967f3785d71bde	PatchThird Party Advisory
https://www.tenable.com/security/tns-2016-20	Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-4472), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.