CVE-2025-3033

high

Description

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 was fixed in Firefox 137 and Thunderbird 137.

References

https://www.mozilla.org/security/advisories/mfsa2025-23/

https://www.mozilla.org/security/advisories/mfsa2025-20/

https://bugzilla.mozilla.org/show_bug.cgi?id=1950056

Details

Source: Mitre, NVD

Published: 2025-04-01

Updated: 2026-04-13

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 7.7

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: High

EPSS

EPSS: 0.00011