CVE-2026-42834

Modified Modified - Updated After Analysis

Improper Link Resolution in Windows Admin Center

Publication date: 2026-05-20

Last updated on: 2026-06-01

Assigner: Microsoft Corporation

Description

Improper access control in Windows Admin Center allows an authorized attacker to elevate privileges over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-05-20

Last Modified

2026-06-01

Generated

2026-06-30

AI Q&A

2026-05-21

EPSS Evaluated

2026-06-28

NVD

CVE-2026-42834

EUVD

EUVD-2026-31104

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_admin_center	to 0.72.0.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-59	The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Attack-Flow Graph

Mitigation Strategies

To mitigate the elevation of privilege vulnerability caused by improper link resolution in Azure Portal Windows Admin Center, it is recommended to apply the security updates provided by Microsoft as soon as they become available.

Ensure that only authorized users have access to the Windows Admin Center and monitor for any unusual local privilege escalation attempts.

Compliance Impact

The vulnerability allows an authorized attacker to elevate privileges locally through improper link resolution before file access in Azure Portal Windows Admin Center.

Such an elevation of privilege could potentially lead to unauthorized access or modification of sensitive data, which may impact compliance with standards and regulations like GDPR and HIPAA that require strict access controls and protection of sensitive information.

Executive Summary

This vulnerability involves improper link resolution before file access, also known as 'link following', in the Azure Portal Windows Admin Center. It allows an authorized attacker to elevate their privileges locally.

Impact Analysis

The vulnerability can lead to an elevation of privilege, meaning an authorized attacker could gain higher-level access than intended within the system. This can result in full control over affected resources, potentially compromising confidentiality, integrity, and availability.

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