CVE-2026-4724

CriticalCVSS 9.1/10Last modified Jun 17, 2026

Description

Undefined behavior in the Audio/Video component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

Affected software

VendorProductVersions
MozillaFirefox—
MozillaThunderbird—

References

Timeline

Published
Mar 24, 2026
Last modified
Jun 17, 2026
NVD status
Modified

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