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Vulnerabilities

Vulnerability · CVE-2023-28484

In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault.

Published Apr 24, 2023 · catalog updated Oct 14, 2026 · In libxml2 before 2.10.4,

Check if you run it

No confirmed exploitation is on record for CVE-2023-28484. EPSS is 1.23%. Act only if a listed version of In libxml2 before 2.10.4, is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (In libxml2 before 2.10.4,).
  • 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
1.23%
Remediation
Advisory link
Affected products
cpe debian/debian linux · cpe xmlsoft/libxml2

In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.

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 xmlsoft/libxml2version unspecified

How to fix CVE-2023-28484

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-2023-28484. EPSS is 1.23%. Act only if a listed version of In libxml2 before 2.10.4, is installed.

Which versions are affected?

Compare what you have installed with debian/debian linux 10.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-476: NULL Pointer Dereference. EPSS 1.23%. 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.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 24, 2023 · NIST NVD

    Detected

    In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.

  2. Oct 14, 2026 · NIST NVD

    Updated

    In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.

Sources

  • CVE.orgVulnerability recordCVE-2023-28484

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-28484

    30-day exploitation probability 1.2%

    first.org
  • NIST NVDVulnerability recordCVE-2023-28484

    In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.

    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.