CVE-2025-3033 – Firefox Windows URL Shortcut Upload Vulnerability

The following table lists the changes that have been made to the
CVE-2025-3033 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Apr. 01, 2025

    Action Type Old Value New Value
    Added 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.
    Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1950056
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-20/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-23/
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