CVE-2026-74982
Received Received - Intake

Denial-of-service in Firefox Widget Component

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Mozilla Corporation

Description
Denial-of-service in the Widget component. This vulnerability was fixed in Firefox 154 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-2026-74982
EUVD
EUVD-2026-60695

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 154 (inc)
mozilla firefox_esr to 153.1 (inc)

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 denial-of-service vulnerability in the Widget component of Firefox and Firefox ESR. It was patched in Firefox 154 and Firefox ESR 153.1.

Detection Guidance

Detection methods are not specified in the provided CVE details. Monitor for crashes or hangs in Firefox processes, especially after version 154 or ESR 153.1 updates. Check application logs for widget-related errors or unusual behavior.

Impact Analysis

An attacker could exploit this to crash the browser, leading to loss of access to web applications and data. Users may experience unexpected shutdowns or unresponsiveness.

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 denial-of-service issue in the Widget component fixed in Firefox 154 and Firefox ESR 153.1.

Mitigation Strategies

Update Firefox to version 154 or later and Firefox ESR to version 153.1 or later to address the DoS vulnerability in the Widget component.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-74982. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart