CVE-2026-83927
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Windows Registry Link Following Local Privilege Escalation

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description
Improper link resolution before file access ('link following') in Windows Registry allows an authorized attacker to elevate privileges locally.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-14
AI Q&A
2026-10-14
EPSS Evaluated
N/A
NVD
CVE-2026-83927
EUVD
EUVD-2026-99442

Affected Vendors & Products

Showing 11 associated CPEs
Vendor Product Version / Range
Microsoft Windows 10 Version 21H2 10.0.19044.0
Microsoft Windows 10 Version 22H2 10.0.19045.0
Microsoft Windows 11 version 23H2 10.0.22631.0
Microsoft Windows 11 Version 23H2 10.0.22631.0
Microsoft Windows 11 Version 24H2 10.0.26100.0
Microsoft Windows 11 Version 25H2 10.0.26200.0
Microsoft Windows 11 version 26H1 10.0.28000.0
Microsoft Windows 11 Version 26H2 10.0.26300.0
Microsoft Windows Server 2022 10.0.20348.0
Microsoft Windows Server 2025 10.0.26100.0
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

This vulnerability involves improper link resolution before file access in the Windows Registry, allowing an authorized attacker to elevate privileges locally by exploiting link following.

Impact Analysis

An attacker could gain higher privileges on your system, potentially allowing them to install programs, view or delete data, or create new accounts with full user rights.

Compliance Impact

This vulnerability could lead to unauthorized access or privilege escalation, potentially violating data protection requirements under GDPR or HIPAA by exposing sensitive information.

Mitigation Strategies

Apply the latest Windows security updates from Microsoft to patch the registry link resolution vulnerability. Monitor Microsoft's security advisories for patches and install them promptly.

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