VULNERABILITY INTELLIGENCE
CVE-2026-4724
CVSS score9.1 CRITICAL
EPSS probability0.51%
CISA KEVNot currently listed
Published2026-03-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Description
Undefined behavior in the Audio/Video component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-758
Primary references
- security@mozilla.org — Permissions Required
- security@mozilla.org — Vendor Advisory
- security@mozilla.org — Vendor Advisory