CVE-2025-4084
MEDIUM severity · CVSS 5.7 · CWE-116
5.7CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
Confidentiality impactHigh
Integrity impactNone
Availability impactNone
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.mozilla.org/security/advisories/mfsa2025-29/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-30/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-32/Advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1949994%2C1956698%2C1960198
- https://lists.debian.org/debian-lts-announce/2025/05/msg00022.html