MFSA-RESERVE-2025-1949994
First published: Tue Apr 29 2025(Updated: )
Due to insufficient escaping of the ampersand character 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.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Firefox ESR | <128.10 | 128.10 |
| Mozilla Thunderbird | <128.10 | 128.10 |
| Firefox ESR | <115.23 | 115.23 |
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Reference Links
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1949994%2C1956698%2C1960198
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-29/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-32/
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1949994%2C1960198
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-30/
Frequently Asked Questions
What is the severity of MFSA-RESERVE-2025-1949994?
MFSA-RESERVE-2025-1949994 has a high severity due to the potential for local code execution on affected systems.
How do I fix MFSA-RESERVE-2025-1949994?
To fix MFSA-RESERVE-2025-1949994, update Firefox ESR or Thunderbird ESR to versions 128.10 or later.
Which platforms are affected by MFSA-RESERVE-2025-1949994?
MFSA-RESERVE-2025-1949994 specifically affects Firefox running on Windows.
What feature is exploited in MFSA-RESERVE-2025-1949994?
The vulnerability in MFSA-RESERVE-2025-1949994 exploits the 'copy as cURL' feature due to insufficient escaping.
Is my version of Firefox safe from MFSA-RESERVE-2025-1949994?
Versions of Firefox other than the affected 128.10 and earlier are not vulnerable to MFSA-RESERVE-2025-1949994.
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