CVE-2026-16392
Received Received - Intake

JIT Miscompilation in Firefox JavaScript Engine

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Mozilla Corporation

Description
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153.

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Meta Information

Published
2026-07-21
Last Modified
2026-07-21
Generated
2026-07-21
AI Q&A
2026-07-21
EPSS Evaluated
N/A
NVD
CVE-2026-16392
EUVD
EUVD-2026-46229

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 153

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Exploitability

CWE
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a JIT miscompilation vulnerability in the JavaScript Engine component of Firefox. It was fixed in Firefox version 153. Miscompilation means the Just-In-Time compiler incorrectly translates JavaScript code, potentially leading to unexpected behavior or security issues.

Impact Analysis

This vulnerability could allow attackers to execute arbitrary code or crash the browser by exploiting the JIT miscompilation. Users running vulnerable Firefox versions may face stability issues or security risks like remote code execution.

Compliance Impact

The provided CVE data does not specify how this vulnerability affects compliance with standards like GDPR or HIPAA. The description only mentions a JIT miscompilation issue in Firefox without details on potential data exposure or security impacts relevant to compliance.

Mitigation Strategies

Update Firefox to version 153 or later to address the JIT miscompilation vulnerability in the JavaScript Engine.

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