CVE-2025-6424
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mozilla | Firefox | 115.25 <= 115.* | unaffected |
| Mozilla | Firefox | 128.12 <= 128.* | unaffected |
| Mozilla | Firefox | 140 <= * | unaffected |
| Mozilla | Thunderbird | 128.12 <= 128.* | unaffected |
| Mozilla | Thunderbird | 140 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: total
CVE Program Container
Additional References
- https://lists.debian.org/debian-lts-announce/2025/07/msg00002.html
- https://lists.debian.org/debian-lts-announce/2025/06/msg00029.html
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/
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