CVE-2026-74940
Received Received - Intake

Use-after-free in Firefox Graphics Text Component

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Mozilla Corporation

Description
Use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, and Firefox ESR 153.1.

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Meta Information

Published
2026-08-18
Last Modified
2026-08-18
Generated
2026-08-18
AI Q&A
2026-08-18
EPSS Evaluated
N/A
NVD
CVE-2026-74940
EUVD
EUVD-2026-60747

Affected Vendors & Products

Showing 8 associated CPEs
Vendor Product Version / Range
mozilla firefox to 154 (inc)
mozilla firefox_esr to 115.39 (inc)
mozilla firefox_esr to 140.14 (inc)
mozilla firefox_esr to 153.1 (inc)
mozilla firefox 154
mozilla firefox_esr 115.39
mozilla firefox_esr 140.14
mozilla firefox_esr 153.1

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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 Firefox's Graphics: Text component. Use-after-free occurs when a program continues to use memory after it has been freed, potentially leading to crashes or arbitrary code execution.

Detection Guidance

Detection requires checking Firefox version against patched releases. Run 'firefox --version' or check 'about:support' in Firefox. Affected versions are below Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, or Firefox ESR 153.1.

Impact Analysis

An attacker could exploit this to crash your browser or run malicious code on your device. This could lead to data theft, system compromise, or unauthorized access if the attacker gains control.

Compliance Impact

The provided CVE data does not specify how this vulnerability affects compliance with standards like GDPR or HIPAA. The description only mentions a use-after-free issue in Firefox's Graphics: Text component, fixed in specific versions.

Mitigation Strategies

Update Firefox to version 154 or later, or Firefox ESR to 115.39, 140.14, or 153.1 or newer. Disable automatic updates temporarily if needed, but prioritize patching.

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