CVE-2025-6424

—

CVSS 3.1

9.8 critical

EPSS

3%p88

Published

Jun 24, 2025 (Jun 24, 2025)

Modified

Jun 17, 2026

Description

A use-after-free in FontFaceSet resulted in a potentially exploitable crash. This vulnerability was fixed in Firefox 140, Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.

Vendors: mozilla
Products: firefox
Weakness: CWE-416
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (3.4%)

In the news0 stories

No ingested article mentions this CVE yet.