CVE-2026-42972

Analyzed Analyzed - Analysis Complete

Exposure of Sensitive Information in Windows Hyper-V

Publication date: 2026-06-09

Last updated on: 2026-06-10

Assigner: Microsoft Corporation

Description

Exposure of sensitive information to an unauthorized actor in Windows Hyper-V allows an authorized attacker to disclose information locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-09

Last Modified

2026-06-10

Generated

2026-06-30

AI Q&A

2026-06-09

EPSS Evaluated

2026-06-28

NVD

CVE-2026-42972

EUVD

EUVD-2026-35729

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
microsoft	windows_10_1607	to 10.0.14393.9234 (exc)
microsoft	windows_10_1809	to 10.0.17763.8880 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7417 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7417 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7219 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7219 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8655 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8655 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8655 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8655 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_server_2016	to 10.0.14393.9234 (exc)
microsoft	windows_server_2019	to 10.0.17763.8880 (exc)
microsoft	windows_server_2022	to 10.0.20348.5256 (exc)
microsoft	windows_server_2025	to 10.0.26100.32995 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This vulnerability involves the exposure of sensitive information within Windows Hyper-V. It allows an authorized attacker to locally disclose information that should be protected from unauthorized access.

Impact Analysis

The impact of this vulnerability is information disclosure. An attacker with local authorized access can obtain sensitive information that they are not supposed to access, potentially leading to privacy breaches or further exploitation.

Compliance Impact

This vulnerability involves the exposure of sensitive information to an unauthorized actor, which could potentially impact compliance with data protection regulations such as GDPR and HIPAA that require safeguarding sensitive data.

Since the vulnerability allows an authorized attacker to disclose sensitive information locally, organizations using Windows Hyper-V may face increased risk of data breaches, which could lead to non-compliance with these standards.

Mitigation Strategies

To mitigate this vulnerability, it is important to apply the security updates provided by Microsoft for Windows Hyper-V as soon as they are available.

Since the vulnerability allows an authorized local attacker to disclose sensitive information, limiting local access to trusted users and monitoring for unusual local activity can help reduce risk.

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