CVE-2026-83939

Microsoft · Published September 8, 2026

8.2

CVSS v3.1

HIGH

Patch availableGet patch

Description

Windows Secure Kernel Mode Elevation of Privilege Vulnerability. Untrusted pointer dereference in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.

Affected Products

Windows 11 version 26H1 for x64-based Systems
Windows 11 Version 26H1 for ARM64-based Systems

CVSS Vector

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