CVE-2026-100788
Received Received - Intake

Memory Corruption in Firefox JavaScript WebAssembly

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: Mozilla Corporation

Description
Invalid pointer 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-2026-100788
EUVD
EUVD-2026-88940

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
mozilla firefox 153.4
mozilla firefox 157
mozilla firefox 140.17
mozilla firefox to 153.4 (inc)

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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 vulnerability involves an invalid pointer in the JavaScript WebAssembly component of Firefox browsers. It was addressed in specific Firefox updates, including ESR 153.4, Firefox 157, and ESR 140.17.

Impact Analysis

An invalid pointer flaw could lead to crashes, unexpected behavior, or potential code execution exploits in affected Firefox versions. Users running unpatched browsers may face security risks.

Mitigation Strategies

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

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