CVE-2025-14330

critical · 9.8

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

9.8

CVSS

0.5%

EPSS (exploit prob.)

42nd

EPSS percentile

2025-12-09

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-119CWE-686CWE-843

Affected products

Vendor	Product	Affected versions
mozilla	firefox	< 140.6.0
mozilla	firefox	< 146.0
mozilla	thunderbird	< 140.6.0
mozilla	thunderbird	< 146.0

Check a specific version with /api/v1/cve/match.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1997503
https://www.mozilla.org/security/advisories/mfsa2025-92/
https://www.mozilla.org/security/advisories/mfsa2025-94/
https://www.mozilla.org/security/advisories/mfsa2025-95/
https://www.mozilla.org/security/advisories/mfsa2025-96/

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-14330