CVE-2026-4724
Received Received - Intake
Undefined Behavior in Firefox Audio/Video Component Prior to

Publication date: 2026-03-24

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

Description
Undefined behavior in the Audio/Video component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
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Meta Information
Published
2026-03-24
Last Modified
2026-04-13
Generated
2026-06-16
AI Q&A
2026-03-24
EPSS Evaluated
2026-06-15
NVD
CVE-2026-4724
EUVD
EUVD-2026-14863
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 149.0 (exc)
mozilla thunderbird to 149.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-758 The product uses an API function, data structure, or other entity in a way that relies on properties that are not always guaranteed to hold for that entity.
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Executive Summary

This vulnerability involves undefined behavior in the Audio/Video component of Firefox versions earlier than 149.

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Detection Guidance

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