CVE-2025-3032

HIGH 7.4

Leaking file descriptors from the fork server

CVSS Score

7.4

EPSS Score

0.0%

EPSS Percentile

0th

Leaking of file descriptors from the fork server to web content processes could allow for privilege escalation attacks. This vulnerability was fixed in Firefox 137 and Thunderbird 137.

Vendor	mozilla
Product	firefox
Ecosystems	Browser JavaScript
Industries	Technology
Published	Apr 1, 2025
Last Updated	Apr 13, 2026

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Affected Versions

Mozilla / Firefox

All versions affected

Mozilla / Thunderbird

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=1949987 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-20/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-23/

Credits

Thinker Li