CVE-2026-16410
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-2026-16410
EUVD
EUVD-2026-46248

Affected Vendors & Products

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

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Exploitability

CWE
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KEV
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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 of Firefox. JIT stands for Just-In-Time compilation, which optimizes JavaScript code execution. A miscompilation here could lead to incorrect code generation, potentially causing crashes or unexpected behavior in the browser.

Impact Analysis

If exploited, this vulnerability could allow attackers to execute arbitrary code on your system by tricking you into visiting a malicious website. It may also cause Firefox to crash or behave unpredictably, leading to potential data loss or system instability.

Mitigation Strategies

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

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