CVE-2026-109765
Received Received - Intake

Race Condition and Use-After-Free in Firefox Graphics Text

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Mozilla Corporation

Description
Race condition, use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox 158 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-2026-109765
EUVD
EUVD-2026-98525

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
mozilla firefox to 158 (inc)
mozilla firefox_esr to 153.5 (inc)
mozilla firefox 158
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 is a race condition and use-after-free vulnerability in Firefox's Graphics Text component. A race condition occurs when two or more threads access shared data simultaneously, leading to unpredictable behavior. Use-after-free happens when a program continues to use memory after it has been freed, potentially causing crashes or arbitrary code execution.

Impact Analysis

This vulnerability could allow attackers to execute arbitrary code, crash the application, or gain unauthorized access to sensitive data. Users running vulnerable versions of Firefox may experience system instability or security breaches.

Mitigation Strategies

Update Firefox to version 158 or later and Firefox ESR to version 153.5 or later to address the race condition and use-after-free issues in the Graphics: Text component.

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