CVE-2026-100793
Received Received - Intake

JIT Miscompilation in Firefox JavaScript Engine

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: Mozilla Corporation

Description
JIT miscompilation in the JavaScript Engine component. This vulnerability was fixed in Firefox 157.

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Meta Information

Published
2026-09-29
Last Modified
2026-09-29
Generated
2026-09-29
AI Q&A
2026-09-29
EPSS Evaluated
N/A
NVD
CVE-2026-100793
EUVD
EUVD-2026-88945

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 157

Helpful Resources

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 Firefox's JavaScript Engine. Just-In-Time compilation errors could lead to incorrect code execution, potentially causing crashes or unexpected behavior in the browser.

Impact Analysis

An attacker could exploit this to execute arbitrary code, crash the browser, or bypass security mechanisms. Users running vulnerable Firefox versions may face stability issues or security risks.

Mitigation Strategies

Update Firefox to version 157 or later to address the JIT miscompilation vulnerability in the JavaScript Engine component.

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