CVE-2026-40369

HIGH

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

CVSS v3.1 Score

7.8

HIGH

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

Attack Vector

LOCAL

Complexity

LOW

Privileges

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Published: 5/12/2026Modified: 6/1/2026

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