Vulnerability Monitor

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CVE-2025-3033

After selecting a malicious Windows `.url` shortcut from the local filesystem, an unexpected file could be uploaded. *This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 137 and Thunderbird < 137.

Published

2025-04-01T13:15:41.697

Last Modified

2025-04-07T13:30:59.570

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.7 (HIGH)

Weaknesses

Type: Secondary
CWE-73

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 137.0	Yes
Application	mozilla	thunderbird	< 137.0	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1950056 Issue Tracking, Permissions Required ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-20/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-23/ Vendor Advisory ([email protected])