CVE-2026-83939 HIGH

CVE-2026-83939: Windows Secure Kernel Mode Elevation of Privilege Vulnerability

Vendor Microsoft
Product Windows 11 version 26H1
Weakness CWE-822
Published September 8, 2026
Last update September 18, 2026
View on NVD All CVEs

CVSS base score

8.2/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

September 8, 2026 CVE published
September 18, 2026 Record updated