CVE-2025-4087

CVSS 3.1 Score 6.5 of 10 (medium)

Details

Published Apr 29, 2025
Updated: May 9, 2025
CWE ID 125

Summary

CVE-2025-4087 is a vulnerability discovered in Thunderbird, an email client, where XPath parsing can lead to undefined behavior due to missing null checks during attribute access. This issue results in out-of-bounds read access, increasing the risk of memory corruption. Affected versions include Firefox below 138, Firefox ESR below 128.10, Thunderbird below 138, and Thunderbird below 128.10. Users are encouraged to update their software as soon as possible to mitigate this threat.

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Affected Products

  • Mozilla Firefox
  • Mozilla Thunderbird

Affected Vendors

  • Mozilla

Advisories, Assessments, and Mitigations