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Critical 9.8Published Dec 9, 2025
CVE-2025-14324JIT miscompilation in the JavaScript Engine: JIT component.
Updated under an hour ago ()
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JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
- CVSS
- 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-94
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Oct 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
mozilla firefox mozilla:firefox | before 115.31.0; before 146.0; from 116.0 before 140.6.0 | NVD |
mozilla thunderbird mozilla:thunderbird | before 140.6.0; before 146.0 | NVD |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1996840issue-tracking, permissions-required
- https://www.mozilla.org/security/advisories/mfsa2025-92/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2025-93/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2025-94/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2025-95/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2025-96/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.