vulnerability
MFSA2025-55 Thunderbird: Security Vulnerabilities fixed in Thunderbird 128.12 (CVE-2025-6424)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 10 | (AV:N/AC:L/Au:N/C:C/I:C/A:C) | Jun 24, 2025 | Jul 3, 2025 | Feb 2, 2026 |
Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
Jun 24, 2025
Added
Jul 3, 2025
Modified
Feb 2, 2026
Description
A use-after-free in FontFaceSet resulted in a potentially exploitable crash. This vulnerability affects Firefox < 140, Firefox ESR < 115.25, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12.
Solution
mozilla-thunderbird-upgrade-128_12
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