CVE-2025-3033 Information

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 affects Firefox < 137 and Thunderbird < 137.

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1950056 https://www.mozilla.org/security/advisories/mfsa2025-20/ https://www.mozilla.org/security/advisories/mfsa2025-23/ 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.