CVE-2026-92063: Denial-of-service in the Audio/Video component

Published Sep 15, 2026
·
Updated

Denial-of-service in the Audio/Video component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.

Affected Software

5 affected componentsFixes available
Mozilla Firefox<156
Mozilla Firefox<156
156
Mozilla Thunderbird<156
156
Mozilla Firefox<156.0.0
Mozilla Thunderbird<156.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 156
  2. Upgrade

    Upgrade Mozilla Firefox (Audio/Video component) to a version that resolves this vulnerability.

    Fixed in 156
  3. Upgrade

    Upgrade Mozilla Thunderbird (Audio/Video component) to a version that resolves this vulnerability.

    Fixed in 156

Event History

Sep 15, 2026
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Updated
via Mozilla·12:00 AM
Affected Software
CVE Published
via MITRE·12:34 PM
Data Sourced
via MITRE·12:34 PM
Description
Data Sourced
via NVD·01:17 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

Which Firefox versions need to be updated?

The issue was fixed in Firefox 156. Firefox versions before the fixed release should be updated to Firefox 156 or a later release.

2

What is the impact of successful exploitation?

The reported impact is denial of service in Firefox's Audio/Video component. The provided information does not describe data exposure or code execution.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203