CVE-2026-2447

—

CVSS 3.1

8.8 high

EPSS

<1%p47

Published

Feb 16, 2026 (Feb 16, 2026)

Modified

Jul 15, 2026

Description

Heap buffer overflow in libvpx. This vulnerability was fixed in Firefox 147.0.4, Firefox ESR 140.7.1, Firefox ESR 115.32.1, Thunderbird 140.7.2, and Thunderbird 147.0.2.

Vendors: mozilla
Products: firefox, thunderbird
Weakness: CWE-122
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.6%)

In the news0 stories

No ingested article mentions this CVE yet.