CVE-2026-20876 MEDIUM

CVE-2026-20876: Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability

Vendor Microsoft
Product Windows 11 version 22H3
Weakness CWE-122
Published January 13, 2026
Last update April 1, 2026
View on NVD All CVEs

CVSS base score

6.7/10
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:U/C:H/I:H/A:H/E:U/RL:O/RC:C

What the vulnerability does

01Description

Heap-based buffer overflow in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

Key dates

02Disclosure timeline

January 13, 2026 CVE published
April 1, 2026 Record updated