Is CVE-2012-0876 being actively exploited?

CVE-2012-0876 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2012-0876?

CVE-2012-0876 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2012-0876

MEDIUM · CVSS 4.3EPSS 5.7%EU EUVD

The XML parser (xmlparse.c) in expat before 2.1.0 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via an XML file with many identifiers with the same value.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness (CWE): CWE-400
EPSS score: 5.7% (93th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2012-0901)
Published: July 3, 2012
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2012-0901 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
debian / debian linux
debian / debian linux
libexpat project / libexpat
oracle / solaris
python / python
redhat / enterprise linux desktop
redhat / enterprise linux desktop
redhat / enterprise linux eus
redhat / enterprise linux server
redhat / enterprise linux server
redhat / enterprise linux server aus
redhat / enterprise linux workstation
redhat / enterprise linux workstation
redhat / storage

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Red Hat Enterprise Linux 5 OpenSSH-Server Cryptographic Module - Red Hat®, Inc. - FIPS 140 1384 - historical

References

http://bugs.python.org/issue13703#msg151870(Issue Tracking, Third Party Advisory)
http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html(Broken Link, Mailing List)
http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html(Broken Link, Mailing List)
http://mail.libexpat.org/pipermail/expat-discuss/2012-March/002768.html(Broken Link)
http://rhn.redhat.com/errata/RHSA-2012-0731.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-0062.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-2957.html(Third Party Advisory)
http://secunia.com/advisories/49504(Not Applicable)
http://secunia.com/advisories/51024(Not Applicable)
http://secunia.com/advisories/51040(Not Applicable)
http://sourceforge.net/projects/expat/files/expat/2.1.0/(Release Notes, Third Party Advisory)
http://sourceforge.net/tracker/?func=detail&atid=110127&aid=3496608&group_id=10127(Third Party Advisory)
http://www.debian.org/security/2012/dsa-2525(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2012:041(Broken Link)
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html(Third Party Advisory)
http://www.securityfocus.com/bid/52379(Third Party Advisory, VDB Entry)
http://www.ubuntu.com/usn/USN-1527-1(Third Party Advisory)
http://www.ubuntu.com/usn/USN-1613-1(Third Party Advisory)
http://www.ubuntu.com/usn/USN-1613-2(Third Party Advisory)
https://kc.mcafee.com/corporate/index?page=content&id=SB10365(Broken Link)
https://support.apple.com/HT205637(Third Party Advisory)
https://www.tenable.com/security/tns-2016-20(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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