PT-2026-2740 · Microsoft · Windows Virtualization-Based Security+2

Published 2026-01-13 · Updated 2026-01-13 · CVE-2026-20938

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows Virtualization-Based Security (VBS) Enclave (affected versions not specified)

Description A flaw exists in Windows Virtualization-Based Security (VBS) Enclave that could allow a local attacker to gain higher privileges on the system. The issue is due to an untrusted pointer dereference. This could allow an authorized attacker to elevate privileges locally.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Untrusted Pointer Dereference

Weakness Enumeration

CWE-822

Related Identifiers

BDU:2026-00415

CVE-2026-20938

Affected Products

Windows

Windows Vbs Enclave

Windows Virtualization-Based Security

References · 6

• https://osv.dev/vulnerability/CVE-2026-20938 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-20938 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20938 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20938 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20938 · Security Note
• https://bdu.fstec.ru/vul/2026-00415 · Security Note