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Vulnerabilities

Vulnerability · CVE-2009-2416

Multiple use-after-free vulnerabilities in libxml2 2.5.10, 2.6.16, 2.6.26, 2.6.27, and 2.6.32, and libxml 1.8.17, allow context-dependent attackers to cause a denial o…

Published Aug 11, 2009 · catalog updated Jun 16, 2026 · Apple

Check if you run it

No confirmed exploitation is on record for CVE-2009-2416. EPSS is 1.96%. Act only if a listed version of Apple 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
1.96%
Remediation
Advisory link
Affected products
cpe canonical/ubuntu linux · cpe debian/debian linux · cpe redhat/enterprise linux · cpe xmlsoft/libxml · cpe xmlsoft/libxml2

Multiple use-after-free vulnerabilities in libxml2 2.5.10, 2.6.16, 2.6.26, 2.6.27, and 2.6.32, and libxml 1.8.17, allow context-dependent attackers to cause a denial of service (application crash) via crafted (1) Notation or (2) Enumeration attribute types in an XML file, as demonstrated by the Codenomicon XML fuzzing framework.

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 canonical/ubuntu linux6.06
  • cpe canonical/ubuntu linux8.04
  • cpe debian/debian linux4.0
  • cpe redhat/enterprise linux3.0
  • cpe redhat/enterprise linux4.0
  • cpe redhat/enterprise linux5.0
  • cpe xmlsoft/libxml1.8.17
  • cpe xmlsoft/libxml22.5.10
  • cpe xmlsoft/libxml22.6.16
  • cpe xmlsoft/libxml22.6.26
  • cpe xmlsoft/libxml22.6.27
  • cpe xmlsoft/libxml22.6.32

How to fix CVE-2009-2416

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-2009-2416. EPSS is 1.96%. Act only if a listed version of Apple is installed.

Which versions are affected?

Compare what you have installed with canonical/ubuntu linux 6.06; canonical/ubuntu linux 8.04; debian/debian linux 4.0; redhat/enterprise linux 3.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-416: Use After Free. EPSS 1.96%. 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. Aug 11, 2009 · Apple Security Releases

    Detected

    Multiple use-after-free vulnerabilities in libxml2 2.5.10, 2.6.16, 2.6.26, 2.6.27, and 2.6.32, and libxml 1.8.17, allow context-dependent attackers to cause a denial of service (application crash) via crafted (1) Notation or (2) Enumeration attribute types in an XML file, as demonstrated by the Codenomicon XML fuzzing framework.

  2. Jun 16, 2026 · Apple Security Releases

    Updated

    Multiple use-after-free vulnerabilities in libxml2 2.5.10, 2.6.16, 2.6.26, 2.6.27, and 2.6.32, and libxml 1.8.17, allow context-dependent attackers to cause a denial of service (application crash) via crafted (1) Notation or (2) Enumeration attribute types in an XML file, as demonstrated by the Codenomicon XML fuzzing framework.

Sources

  • Apple Security ReleasesVendor advisoryCVE-2009-2416

    Multiple use-after-free vulnerabilities in libxml2 2.5.10, 2.6.16, 2.6.26, 2.6.27, and 2.6.32, and libxml 1.8.17, allow context-dependent attackers to cause a denial of service (application crash) via crafted (1) Notation or (2) Enumeration attribute types in an XML file, as demonstrated by the Codenomicon XML fuzzing framework.

    nvd.nist.gov
  • CVE.orgVulnerability recordCVE-2009-2416

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2009-2416

    30-day exploitation probability 1.96%

    first.org

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.