Undefined behavior in the Audio/Video component. This vulnerability affects Firefox < 149 and Thunderbird < 149.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Mozilla Firefox affected
Version Status Constraints
unspecified affected
< 149
Mozilla Thunderbird affected
Version Status Constraints
unspecified affected
< 149

No data.

No data.

No data.

Subscriptions

No data.

Tracking

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2014865 cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-20/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-23/ cve-icon cve-icon
History

Tue, 24 Mar 2026 20:30:00 +0000

Type Values Removed Values Added
Description Undefined behavior in the Audio/Video component. This vulnerability affects Firefox < 149. Undefined behavior in the Audio/Video component. This vulnerability affects Firefox < 149 and Thunderbird < 149.
References

Tue, 24 Mar 2026 12:45:00 +0000

Type Values Removed Values Added
Description Undefined behavior in the Audio/Video component. This vulnerability affects Firefox < 149.
Title Undefined behavior in the Audio/Video component
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-03-24T20:27:34.930Z

Reserved: 2026-03-23T23:22:47.158Z

Link: CVE-2026-4724

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-03-24T13:16:08.280

Modified: 2026-03-24T21:16:34.337

Link: CVE-2026-4724

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.