vulnerability
MFSA2025-42 Firefox: Security Vulnerabilities fixed in Firefox 139 (CVE-2025-5264)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:L/AC:M/Au:S/C:P/I:P/A:P) | May 27, 2025 | May 28, 2025 | Apr 15, 2026 |
Severity
4
CVSS
(AV:L/AC:M/Au:S/C:P/I:P/A:P)
Published
May 27, 2025
Added
May 28, 2025
Modified
Apr 15, 2026
Description
Due to insufficient escaping of the newline 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 vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.
Solution
mozilla-firefox-upgrade-139_0
Rapid7 Labs
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