CVE-2026-8968
Analyzed Analyzed - Analysis Complete
Denial-of-Service in Firefox Due to Invalid Pointer in Web Codecs

Publication date: 2026-05-19

Last updated on: 2026-05-20

Assigner: Mozilla Corporation

Description
Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
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Meta Information
Published
2026-05-19
Last Modified
2026-05-20
Generated
2026-06-10
AI Q&A
2026-05-19
EPSS Evaluated
2026-06-08
NVD
CVE-2026-8968
EUVD
EUVD-2026-30916
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
mozilla firefox to 151.0.0 (exc)
mozilla firefox to 140.11.0 (exc)
mozilla thunderbird to 140.11 (exc)
mozilla thunderbird to 151.0.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.
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Executive Summary

This vulnerability is a denial-of-service issue caused by an invalid pointer in the Audio/Video: Web Codecs component of Mozilla Firefox.

It means that due to improper handling of pointers in this component, an attacker could cause the application to crash or become unresponsive.

The issue was fixed in Firefox version 151 and Firefox ESR 140.11.

Impact Analysis

This vulnerability can impact you by causing denial-of-service conditions in Firefox.

An attacker could exploit the invalid pointer issue to crash the browser or make it unresponsive, disrupting your ability to use it.

Mitigation Strategies

To mitigate this vulnerability, update Firefox to version 151 or later, or Firefox ESR to version 140.11 or later, where the issue has been fixed.

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