CVE-2026-74969
Received Received - Intake

Use-after-free in Firefox Layout Text and Fonts

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Mozilla Corporation

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

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-74969
EUVD
EUVD-2026-60665

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

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a use-after-free vulnerability in Firefox's Layout: Text and Fonts 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

Detecting this vulnerability requires checking Firefox version. Run 'firefox --version' or check 'about:support' in Firefox. If version is below 154 (standard) or 115.39/140.14/153.1 (ESR), the system is vulnerable.

Impact Analysis

This vulnerability could allow attackers to execute arbitrary code or cause denial-of-service conditions by tricking users into visiting malicious websites. It may lead to system crashes or unauthorized access.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The description only mentions a use-after-free issue in Firefox's Layout component without details on potential data exposure or processing impacts.

Mitigation Strategies

Update Firefox to version 154 or Firefox ESR to 115.39, 140.14, or 153.1 immediately. Disable automatic updates temporarily if needed, but prioritize patching. Remove affected versions after updating.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-74969. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart