CVE-2026-20938

HIGH

Windows VBS Enclave - Privilege Escalation

Title source: llm

Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

CVSS v3 7.8

EPSS 0.0003

EPSS Percentile 10.0%

Attack Vector LOCAL

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

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

CWE

CWE-822

Status published

Products (7)

Microsoft/Windows 11 version 22H3 10.0.22631.0 - 10.0.22631.6491

Microsoft/Windows 11 Version 23H2 10.0.22631.0 - 10.0.22631.6491

Microsoft/Windows 11 Version 24H2 10.0.26100.0 - 10.0.26100.7623

Microsoft/Windows 11 Version 25H2 10.0.26200.0 - 10.0.26200.7623

microsoft/windows_11_23h2 < 10.0.22631.6491 (2 CPE variants)

microsoft/windows_11_24h2 < 10.0.26100.7623 (2 CPE variants)

microsoft/windows_11_25h2 < 10.0.26200.7623 (2 CPE variants)

Published Jan 13, 2026

Tracked Since Feb 18, 2026