CVE-2026-8972: Privilege escalation in the WebRTC: Audio/Video component

Published May 19, 2026
·
Updated

Privilege escalation in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Affected Software

4 affected componentsFixes available
Mozilla Firefox<151
151
Mozilla Thunderbird<151
151
Mozilla Firefox<151.0.0
Mozilla Thunderbird<151.0.0

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 151
  2. Upgrade

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

    Fixed in 151
  3. Upgrade

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

    Fixed in 151

Event History

May 19, 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·12:30 PM
Data Sourced
via MITRE·12:30 PM
Description
Data Sourced
via NVD·02:16 PM
DescriptionSeverityWeaknessAffected Software
Apr 28, 58520
Event
via FIRST·12:26 PM

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-8972?

CVE-2026-8972 has been classified as a privilege escalation vulnerability.

2

How do I fix CVE-2026-8972?

To mitigate CVE-2026-8972, update to Firefox or Thunderbird version 151 or higher.

3

Which software is affected by CVE-2026-8972?

CVE-2026-8972 affects Mozilla Firefox and Mozilla Thunderbird versions prior to 151.

4

What component is involved in the CVE-2026-8972 vulnerability?

The vulnerability in CVE-2026-8972 pertains to the WebRTC Audio/Video component.

5

When was CVE-2026-8972 fixed?

CVE-2026-8972 was addressed in the updates released for Firefox and Thunderbird version 151.

Contact

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