CVE-2026-21245

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CVSS 3.1

7.8 high

EPSS

<1%p37

Published

Feb 10, 2026 (Feb 10, 2026)

Modified

Jun 17, 2026

Description

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

Vendors: microsoft
Products: windows 11 24h2, windows 11 25h2, windows server 2025
Weakness: CWE-122, CWE-787
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.4%)

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