7.7
HIGH
CVE-2025-3033
Firefox Windows URL Shortcut Upload Vulnerability
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.

INFO

Published Date :

April 1, 2025, 1:15 p.m.

Last Modified :

April 7, 2025, 1:30 p.m.

Remotely Exploitable :

No

Impact Score :

5.2

Exploitability Score :

2.5
Affected Products

The following products are affected by CVE-2025-3033 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mozilla firefox
2 Mozilla thunderbird
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-3033.

URL Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1950056 Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-20/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-23/ Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-3033 vulnerability anywhere in the article.

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.

  • Initial Analysis by [email protected]

    Apr. 07, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 137.0 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 137.0
    Added Reference Type Mozilla Corporation: https://bugzilla.mozilla.org/show_bug.cgi?id=1950056 Types: Issue Tracking, Permissions Required
    Added Reference Type Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-20/ Types: Vendor Advisory
    Added Reference Type Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-23/ Types: Vendor Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Apr. 01, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    Added CWE CWE-73
  • 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/
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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Latest DB Update: Apr. 22, 2025 5:12