What is the severity of CVE-2025-4084?

The severity of CVE-2025-4084 is rated as critical due to the potential for local code execution.

How do I fix CVE-2025-4084?

To fix CVE-2025-4084, users should update to the latest version of Firefox or Firefox ESR that addresses this vulnerability.

Who is affected by CVE-2025-4084?

CVE-2025-4084 specifically affects users of Firefox for Windows versions up to 128.10 and certain versions of Firefox ESR and Thunderbird ESR.

What can an attacker achieve with CVE-2025-4084?

An attacker can exploit CVE-2025-4084 to trick users into running potentially malicious commands through the 'copy as cURL' feature.

Is CVE-2025-4084 present in versions after 128.10?

No, CVE-2025-4084 is only present in Firefox for Windows versions prior to 128.10, as the issue is resolved in subsequent updates.

Vulnerability/
CVE-2025-4084

29/4/2025

CVE-2025-4084

First published: Tue Apr 29 2025(Updated: )

Due to insufficient escaping of the special characters in the "copy as cURL" feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. *This bug only affects Firefox for Windows. Other versions of Firefox are unaffected.* This vulnerability affects Firefox ESR < 128.10, Firefox ESR < 115.23, and Thunderbird ESR < 128.10.

Credit: security@mozilla.org

Affected Software	Affected Version	How to fix
Firefox	<128.10
Firefox ESR	<128.10<115.23
Mozilla Thunderbird	<128.10

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Frequently Asked Questions

What is the severity of CVE-2025-4084?
The severity of CVE-2025-4084 is rated as critical due to the potential for local code execution.
How do I fix CVE-2025-4084?
To fix CVE-2025-4084, users should update to the latest version of Firefox or Firefox ESR that addresses this vulnerability.
Who is affected by CVE-2025-4084?
CVE-2025-4084 specifically affects users of Firefox for Windows versions up to 128.10 and certain versions of Firefox ESR and Thunderbird ESR.
What can an attacker achieve with CVE-2025-4084?
An attacker can exploit CVE-2025-4084 to trick users into running potentially malicious commands through the 'copy as cURL' feature.
Is CVE-2025-4084 present in versions after 128.10?
No, CVE-2025-4084 is only present in Firefox for Windows versions prior to 128.10, as the issue is resolved in subsequent updates.

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