Vulnerability Description
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 was fixed in Firefox ESR 128.10, Firefox ESR 115.23, and Thunderbird 128.10.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 115.23 |
| Mozilla | Thunderbird | < 128.10.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1949994%2C1956698%2C1960198Broken Link
- https://www.mozilla.org/security/advisories/mfsa2025-29/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-30/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-32/Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2025/05/msg00022.html
FAQ
What is CVE-2025-4084?
CVE-2025-4084 is a vulnerability with a CVSS score of 5.7 (MEDIUM). 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 ...
How severe is CVE-2025-4084?
CVE-2025-4084 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-4084?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Thunderbird.