Review reviewHigh

CVE-2026-20938

Microsoft Windows 11 version 23H2, Windows 11 Version 23H2, Windows 11 Version 24H2

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

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability-

Technical severityCVSS 7.8

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

Product: Microsoft Windows 11 version 23H2, Windows 11 Version 23H2, Windows 11 Version 24H2
Affected versions: >= 10.0.22631.0 < 10.0.22631.6491, >= 10.0.26100.0 < 10.0.26100.7623, >= 10.0.26200.0 < 10.0.26200.7623, < 10.0.22631.6491, < 10.0.26100.7623, < 10.0.26200.7623
Fixed versions: 10.0.22631.6491, 10.0.26100.7623, 10.0.26200.7623

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Microsoft Windows 11 version 23H2, Windows 11 Version 23H2, Windows 11 Version 24H2 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.