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.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2025-6424 ↗
- bugzilla.mozilla.org/show_bug.cgi ↗
- www.mozilla.org/security/advisories/mfsa2025-51/ ↗
- www.mozilla.org/security/advisories/mfsa2025-52/ ↗
- www.mozilla.org/security/advisories/mfsa2025-53/ ↗
- www.mozilla.org/security/advisories/mfsa2025-54/ ↗
- www.mozilla.org/security/advisories/mfsa2025-55/ ↗
- lists.debian.org/debian-lts-announce/2025/06/msg00029.html ↗
- lists.debian.org/debian-lts-announce/2025/07/msg00002.html ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.