CVE-2026-6781

Received Received - Intake

Denial-of-Service in Firefox Audio/Video Playback Component

Publication date: 2026-04-21

Last updated on: 2026-04-22

Assigner: Mozilla Corporation

Description

Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-04-21

Last Modified

2026-04-22

Generated

2026-07-06

AI Q&A

2026-04-21

EPSS Evaluated

2026-07-04

NVD

CVE-2026-6781

EUVD

EUVD-2026-24122

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	to 150.0 (exc)
mozilla	thunderbird	to 150.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This vulnerability is a denial-of-service issue in the Audio/Video Playback component of Mozilla Firefox. It means that an attacker could cause the application to become unresponsive or crash when handling audio or video playback.

Impact Analysis

The impact of this vulnerability is that it can cause Firefox to crash or become unresponsive during audio or video playback, potentially disrupting your browsing experience or any media consumption within the browser.

Mitigation Strategies

The vulnerability was fixed in Firefox 150. To mitigate this vulnerability, you should update your Firefox browser to version 150 or later.

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