CVE-2025-6424
critical · 9.8A 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.
9.8
CVSS
3.6%
EPSS (exploit prob.)
89th
EPSS percentile
2025-06-24
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-416
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| mozilla | firefox | < 115.25.0 |
| mozilla | firefox | < 140.0 |
| mozilla | firefox | >= 116.0, < 128.12.0 |
Check a specific version with /api/v1/cve/match.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1966423
- https://www.mozilla.org/security/advisories/mfsa2025-51/
- https://www.mozilla.org/security/advisories/mfsa2025-52/
- https://www.mozilla.org/security/advisories/mfsa2025-53/
- https://www.mozilla.org/security/advisories/mfsa2025-54/
- https://www.mozilla.org/security/advisories/mfsa2025-55/
- https://lists.debian.org/debian-lts-announce/2025/06/msg00029.html
- https://lists.debian.org/debian-lts-announce/2025/07/msg00002.html
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2025-6424