CVE-2026-6773: Denial-of-service due to integer overflow in the Graphics: WebGPU component

Published Apr 21, 2026
·
Updated

Denial-of-service due to integer overflow in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

Affected Software

4 affected componentsFixes available
Mozilla Firefox<150
150
Mozilla Thunderbird<150
150
Mozilla Firefox<150.0
Mozilla Thunderbird<150.0

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 150
  2. Upgrade

    Upgrade Mozilla Firefox (Graphics: WebGPU) to a version that resolves this vulnerability.

    Fixed in 150
  3. Upgrade

    Upgrade Mozilla Thunderbird (Graphics: WebGPU) to a version that resolves this vulnerability.

    Fixed in 150

Event History

Apr 21, 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·12:41 PM
Data Sourced
via MITRE·12:41 PM
Description
Data Sourced
via NVD·01:16 PM
DescriptionSeverityWeaknessAffected Software
May 2, 58290
Event
via FIRST·05:11 AM

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the severity of CVE-2026-6773?

CVE-2026-6773 is classified as a denial-of-service vulnerability due to integer overflow in the Graphics: WebGPU component.

2

How do I fix CVE-2026-6773?

To fix CVE-2026-6773, you need to upgrade to Firefox or Thunderbird version 150 or later.

3

What software is affected by CVE-2026-6773?

CVE-2026-6773 affects Mozilla Firefox and Mozilla Thunderbird versions below 150.

4

What is the nature of the attack for CVE-2026-6773?

The attack for CVE-2026-6773 involves triggering a denial-of-service condition through integer overflow.

5

When was CVE-2026-6773 disclosed?

CVE-2026-6773 was disclosed and fixed in Firefox and Thunderbird version 150.

Company

Resources

Contact

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