{"id":"CVE-2025-3032","title":"Leaking of file descriptors from the fork server to web content processes could allow for privilege escalation attacks","summary":"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.","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-403"],"vendor":"mozilla","product":"firefox","affected":["firefox < 137.0","thunderbird < 137.0"],"patched":["firefox 137.0","thunderbird 137.0"],"published":"2025-04-01","updated":"2026-09-30","sourceUpdated":"2026-09-30T18:10:00.190","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-3032","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1949987","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-20/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-23/","label":"security@mozilla.org"}],"tags":["nvd"],"epss":0.00388,"epssPercentile":0.30368,"ingestedAt":"2026-09-30T18:17:24.431Z","slug":"CVE-2025-3032","body":"## Overview\n\nLeaking 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.\n\n## Affected\n\n- `firefox < 137.0`\n- `thunderbird < 137.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `firefox 137.0`\n- `thunderbird 137.0`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}