vulnerability
MFSA2025-52 Firefox: Security Vulnerabilities fixed in Firefox ESR 115.25 (CVE-2025-6424)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 10 | (AV:N/AC:L/Au:N/C:C/I:C/A:C) | Jun 24, 2025 | Jun 25, 2025 | Apr 15, 2026 |
Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
Jun 24, 2025
Added
Jun 25, 2025
Modified
Apr 15, 2026
Description
A use-after-free in FontFaceSet resulted in a potentially exploitable crash. This vulnerability was fixed in Firefox 140, Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.
Solution
mozilla-firefox-esr-upgrade-115_25
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