CVE-2022-25313

MEDIUMNVD 6.56.5—

6.5

In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 35.9%
KEV: Not listed

Published

February 18, 2022

Last Modified

May 30, 2025

References (20)

cve@mitrehttp://www.openwall.com/lists/oss-security/2022/02/19/1
cve@mitrehttps://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
cve@mitrehttps://github.com/libexpat/libexpat/pull/558
cve@mitrehttps://lists.debian.org/debian-lts-announce/2022/03/msg00007.html
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/
cve@mitrehttps://security.gentoo.org/glsa/202209-24
cve@mitrehttps://security.netapp.com/advisory/ntap-20220303-0008/
cve@mitrehttps://www.debian.org/security/2022/dsa-5085
cve@mitrehttps://www.oracle.com/security-alerts/cpuapr2022.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2022/02/19/1
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
af854a3a-2127-422b-91ae-364da2661108https://github.com/libexpat/libexpat/pull/558
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/

Patch Availability(7)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	lib64expat1 (2.1.0-7ubuntu0.16.04.5+esm5) @ xenial	2026-05-26	ubuntu
redhat	expat-0:2.2.10-1.el8_2	2025-12-09	redhat
redhat	expat-0:2.2.10-1.el8_4	2025-12-04	redhat
redhat	mingw-expat-0:2.4.8-1.el8	2022-11-08	redhat
redhat	expat	2022-10-26	redhat
redhat	expat-0:2.2.10-12.el9_0.2	2022-07-01	redhat
redhat	expat-0:2.2.5-8.el8_6.2	2022-06-30	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(8)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 02:52 UTCEG score recompute

Frequently asked(5)

What is CVE-2022-25313?

CVE-2022-25313 is a medium vulnerability published on February 18, 2022. In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.

When was CVE-2022-25313 disclosed?

CVE-2022-25313 was first published in the National Vulnerability Database on February 18, 2022, with the most recent update on May 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-25313 actively exploited?

CVE-2022-25313 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-25313?

CVE-2022-25313 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2022-25313?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-25313, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-25313

Explore →

Is Your Infrastructure Affected by CVE-2022-25313?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2022-25313

Published

Last Modified

References (20)

Patch Availability(7)

Weakness Classification(2)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-25313?

Same vendor

Same CWE

CVE-2022-25313

📅 Published

🔄 Last Modified

🔗 References (20)

Patch Availability(7)

Weakness Classification(2)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-25313?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

References (20)

Frequently asked(5)

Related CVEs(same vendor + same CWE)