CVE-2026-92067
Received Received - Intake

Use-after-free in Firefox Gtk Widget

Publication date: 2026-09-15

Last updated on: 2026-09-15

Assigner: Mozilla Corporation

Description
Use-after-free in the Widget: Gtk component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.

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Meta Information

Published
2026-09-15
Last Modified
2026-09-15
Generated
2026-09-15
AI Q&A
2026-09-15
EPSS Evaluated
N/A
NVD
CVE-2026-92067
EUVD
EUVD-2026-78452

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox 156
mozilla firefox_esr 153.3

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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 use-after-free vulnerability in the Widget: Gtk component of Firefox. Use-after-free means a program tries to use memory after it has been freed, which can lead to crashes or arbitrary code execution. It was fixed in Firefox 156 and Firefox ESR 153.3.

Impact Analysis

This vulnerability could allow an attacker to execute arbitrary code on your system by exploiting the use-after-free flaw in Firefox's Gtk component. This might lead to system compromise, data theft, or installation of malware if you are using an affected version of Firefox.

Mitigation Strategies

Update Firefox to version 156 or later and Firefox ESR to version 153.3 or later to address the use-after-free vulnerability in the Widget: Gtk component.

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