CVE-2025-14330

CRITICAL EPSS 33.9%
Published Dec 9, 20256mo ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Dec 9, 2025 6mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
33.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 3

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-686
CWE-843

Affected Products 4

VendorProductVersionRange
mozillafirefox* <140.6.0
mozillafirefox* <146.0
mozillathunderbird* <140.6.0
mozillathunderbird* <146.0

References 5

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1997503
    Issue TrackingPermissions Required
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-92/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-94/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-95/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-96/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.