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CVE-2025-3032

Date: April 1, 2025

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

Severity Score

Related Resources (5)

https://bugzilla.mozilla.org/show_bug.cgi?id=1949987
https://nvd.nist.gov/vuln/detail/CVE-2025-3032
https://www.mozilla.org/security/advisories/mfsa2025-23/
https://www.mozilla.org/security/advisories/mfsa2025-20/
https://www.mend.io/vulnerability-database/CVE-2025-3032

Severity Score

Weakness Type (CWE)

Exposure of File Descriptor to Unintended Control Sphere ('File Descriptor Leak')

CWE-403

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

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