CVE-2026-100792
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: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17.

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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-2026-100792
EUVD
EUVD-2026-88944

Affected Vendors & Products

Showing 5 associated CPEs
Vendor Product Version / Range
mozilla firefox to 153.4 (inc)
mozilla firefox 157
mozilla firefox to 140.17 (inc)
mozilla firefox 153.4
mozilla firefox 140.17

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 vulnerability is a JIT miscompilation issue in the JavaScript: WebAssembly component of Firefox. It could lead to incorrect code execution, potentially causing crashes or unexpected behavior in affected versions.

Impact Analysis

If exploited, this vulnerability could allow attackers to execute arbitrary code, crash the browser, or bypass security mechanisms. Users of vulnerable Firefox versions are at risk until they update to patched versions.

Mitigation Strategies

Update Firefox to version ESR 153.4, Firefox 157, or ESR 140.17 or later to address the JIT miscompilation issue in the JavaScript: WebAssembly component.

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