CVE-2025-14324 | JIT miscompilation in the JavaScript Engine: JIT component. … | CVSS 9.8 CRITICAL

Description

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.

Metadata

CVE ID: CVE-2025-14324
State: PUBLISHED
Assigner: mozilla
Reserved: 2025-12-09 13:37 UTC
Published: 2025-12-09 13:37 UTC
Last updated: 2026-04-13 14:25 UTC
Primary CWE: CWE-94
CWE-94 Improper Control of Generation of Code ('Code Injecti…
Vendor / Product: Mozilla / Firefox
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (2)

Vendor	Product	Platform	Versions
Mozilla	Firefox	—	115.31 ≤ 115., 140.6 ≤ 140., 146 ≤ *
Mozilla	Thunderbird	—	140.6 ≤ 140., 146 ≤

Weakness (CWE)

CWE	Source	Description
CWE-94	adp	CWE-94 Improper Control of Generation of Code ('Code Injection')

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (6)