CVE-2026-4724

CRITICAL SEVERITY

CVSS Score & Metrics

Base Score

9.1 / 10

Vector String

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

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

Published Date

March 24, 2026

Last Modified

March 25, 2026

CWE ID

CWE-758

Source

NVD

Vendor

mozilla

Product

firefox