CVE-2025-14324 — Code Injection in Mozilla Firefox

CWE-94 — Code Injection13 documents9 sources
Severity
9.8CRITICALNVD
EPSS
0.1%
top 73.38%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla ThunderbirdMozilla Firefox
Timeline
PublishedDec 9
Latest updateFeb 2

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages3 packages

▶NVDmozilla/firefox116.0 — 140.6.0+2
▶NVDmozilla/thunderbird< 140.6.0+1
▶Debianmozilla/thunderbird< 1:140.6.0esr-1~deb11u1+3

🔴Vulnerability Details

3
OSV
CVE-2025-14324: JIT miscompilation in the JavaScript Engine: JIT component↗2025-12-09
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GHSA
GHSA-c45v-h9vf-q66x: JIT miscompilation in the JavaScript Engine: JIT component↗2025-12-09
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CVEList
JIT miscompilation in the JavaScript Engine: JIT component↗2025-12-09
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📋Vendor Advisories

8
Ubuntu
Thunderbird vulnerabilities↗2026-02-02
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Red Hat
firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component↗2025-12-09
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Debian
CVE-2025-14324: firefox - JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability a...↗2025
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Mozilla
Mozilla Foundation Security Advisory 2025-92: CVE-2025-14324↗
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Mozilla
Mozilla Foundation Security Advisory 2025-96: CVE-2025-14324↗
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🕵️Threat Intelligence

1
Wiz
CVE-2025-14324 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2025-14324 — Code Injection in Mozilla Firefox | cvebase