CVE-2026-117999
Received Received - Intake

Race Condition in Firefox IPC Component

Publication date: 2026-10-27

Last updated on: 2026-10-27

Assigner: Mozilla Corporation

Description
Race condition in the IPC component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

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Meta Information

Published
2026-10-27
Last Modified
2026-10-27
Generated
2026-10-27
AI Q&A
2026-10-27
EPSS Evaluated
N/A
NVD
CVE-2026-117999
EUVD
EUVD-2026-110898

Affected Vendors & Products

Currently, no data is known.

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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 is a race condition vulnerability in Firefox's IPC (Inter-Process Communication) component. A race condition occurs when multiple processes or threads access shared data simultaneously, leading to unexpected behavior. It was fixed in Firefox version 159 and Firefox ESR version 153.6.

Impact Analysis

A race condition in IPC could allow attackers to exploit timing issues to gain unauthorized access, execute arbitrary code, or cause system crashes. Users running vulnerable Firefox versions may face data breaches, system instability, or malware execution.

Mitigation Strategies

Update Firefox to version 159 or later and Firefox ESR to version 153.6 or later to address the race condition in the IPC component.

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