CVE-2026-109715
Received Received - Intake

Memory Corruption in Firefox JavaScript Engine

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-2026-109715
EUVD
EUVD-2026-98638

Affected Vendors & Products

Showing 6 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)
mozilla firefox 158
mozilla firefox_esr 115.43
mozilla firefox_esr 153.5

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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 patched in Firefox 158 and Firefox ESR versions 115.43 and 153.5.

Impact Analysis

An attacker could exploit this flaw to execute arbitrary code or cause a denial of service by triggering boundary condition errors in the JavaScript Engine.

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 vulnerability.

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