CVE-2026-105733

Analyzed Analyzed - Analysis Complete

Improper Access Control in Windows Hyper-V Allows Local Code Execution

Publication date: 2026-10-13

Last updated on: 2026-10-28

Assigner: Microsoft Corporation

Description

Improper access control in Windows Hyper-V allows an authorized attacker to execute code locally.

CVSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-28

Generated

2026-11-08

AI Q&A

2026-10-14

EPSS Evaluated

2026-11-07

NVD

CVE-2026-105733

EUVD

EUVD-2026-99080

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7652 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7652 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9711 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9711 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9711 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9711 (exc)
microsoft	windows_11_26h1	to 10.0.28000.3231 (exc)
microsoft	windows_11_26h1	to 10.0.28000.3231 (exc)
microsoft	windows_11_26h2	to 10.0.26300.9711 (exc)
microsoft	windows_11_26h2	to 10.0.26300.9711 (exc)
microsoft	windows_server_2025	to 10.0.26100.33650 (exc)
microsoft	windows_server_2022	to 10.0.20348.5761 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-863	The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Attack-Flow Graph

Executive Summary

This is an improper access control flaw in Windows Hyper-V. An authorized attacker with local access could exploit it to execute arbitrary code on the host system.

Impact Analysis

If exploited, it could allow attackers to gain full control over your system, install malware, steal data, or disrupt operations. Local access is required, so physical or network access is needed.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR and HIPAA requirements for data protection and access controls.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Hyper-V improper access control vulnerability. Disable Hyper-V if not required and restrict local access to authorized users only.

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