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Vulnerabilities

Vulnerability · CVE-2022-25313

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.

Published Feb 18, 2022 · catalog updated Oct 14, 2026 · libexpat project

Check if you run it

No confirmed exploitation is on record for CVE-2022-25313. EPSS is 3.29%. Act only if a listed version of libexpat project is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
3.29%
Remediation
Advisory link
Affected products
cpe debian/debian linux · cpe fedoraproject/fedora · cpe libexpat project/libexpat · cpe oracle/http server · cpe oracle/zfs storage appliance kit · cpe siemens/sinema remote connect server

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe debian/debian linux10.0
  • cpe debian/debian linux11.0
  • cpe fedoraproject/fedora34
  • cpe fedoraproject/fedora35
  • cpe libexpat project/libexpatversion unspecified
  • cpe oracle/http server12.2.1.3.0
  • cpe oracle/http server12.2.1.4.0
  • cpe oracle/zfs storage appliance kit8.8
  • cpe siemens/sinema remote connect serverversion unspecified

How to fix CVE-2022-25313

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2022-25313. EPSS is 3.29%. Act only if a listed version of libexpat project is installed.

Which versions are affected?

Compare what you have installed with debian/debian linux 10.0; debian/debian linux 11.0; oracle/http server 12.2.1.3.0; oracle/http server 12.2.1.4.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-674. EPSS 3.29%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 18, 2022 · NIST NVD

    Detected

    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.

  2. Oct 14, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2022-25313

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-25313

    30-day exploitation probability 3.3%

    first.org
  • NIST NVDVulnerability recordCVE-2022-25313

    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.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.