CVE-2026-2447

HIGH SEVERITY

CVSS Score & Metrics

Base Score

8.8 / 10

Vector String

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

Vulnerability Description

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

Vulnerability Details

Published Date

February 16, 2026

Last Modified

February 22, 2026

CWE ID

CWE-122

Source

NVD

Vendor

mozilla

Product

firefox

External References

https://bugzilla.mozilla.org/show_bug.cgi?id=2014390
https://www.mozilla.org/security/advisories/mfsa2026-10/

CVE-2026-2447

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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