CVE-2026-109716
Received Received - Intake

JavaScript Engine Boundary Condition Flaw in Firefox

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Mozilla Corporation

Description
Incorrect boundary conditions in the JavaScript Engine component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-13
AI Q&A
2026-10-13
EPSS Evaluated
N/A
NVD
CVE-2026-109716
EUVD
EUVD-2026-98639

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
mozilla firefox to 158 (inc)
mozilla firefox_esr to 115.43 (inc)
mozilla firefox_esr to 153.5 (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 incorrect boundary conditions in the JavaScript Engine component of Firefox browsers. It was addressed in Firefox 158 and specific Firefox ESR versions (115.43 and 153.5).

Impact Analysis

The vulnerability could allow attackers to exploit boundary conditions, potentially leading to memory corruption, crashes, or arbitrary code execution in affected Firefox browsers.

Mitigation Strategies

Update Firefox to version 158 or later, Firefox ESR to version 115.43 or later, or Firefox ESR to version 153.5 or later to address the incorrect boundary conditions in the JavaScript Engine component.

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