CVE-2026-100817
Received Received - Intake

Memory Corruption in Firefox JavaScript WebAssembly

Vulnerability report for CVE-2026-100817, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: Mozilla Corporation

Description

Other issue in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 157.

CVSS Scores

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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
EUVD

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

Attack-Flow Graph

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Executive Summary

This vulnerability is a security issue in the JavaScript: WebAssembly component of Firefox. It was addressed in Firefox version 157, but specific technical details are not provided in the available context.

Impact Analysis

The impact depends on the nature of the vulnerability, which is not detailed here. Users of Firefox versions before 157 may be at risk if the flaw allows unauthorized access, data breaches, or other malicious activities.

Compliance Impact

Without specific details on the vulnerability's nature, it is unclear how it directly impacts compliance. However, if the flaw leads to data exposure or unauthorized access, it could potentially violate GDPR or HIPAA requirements for data protection.

Mitigation Strategies

Update Firefox to version 157 or later to address the vulnerability in the JavaScript: WebAssembly component.

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