CVE-2025-14330

9.8 CRITICAL

Published: December 09, 2025 Modified: December 11, 2025

Description

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

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://bugzilla.mozilla.org/show_bug.cgi?id=1997503

Source: security@mozilla.org

Issue Tracking Permissions Required

https://www.mozilla.org/security/advisories/mfsa2025-92/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-94/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-95/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-96/

Source: security@mozilla.org

Vendor Advisory

5 reference(s) from NVD

Quick Stats

CVSS v3 Score

9.8 / 10.0

EPSS (Exploit Probability)

0.1%

23th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-119 CWE-686 CWE-843

Affected Vendors

mozilla

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