CVE-2026-50391

Analyzed Analyzed - Analysis Complete

Improper Privilege Management in Windows Group Policy

Publication date: 2026-07-14

Last updated on: 2026-07-22

Assigner: Microsoft Corporation

Description

Improper privilege management in Windows Group Policy allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-14

Last Modified

2026-07-22

Generated

2026-08-04

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-02

NVD

CVE-2026-50391

EUVD

EUVD-2026-43922

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_10_1607	to 10.0.14393.9339 (exc)
microsoft	windows_10_1607	to 10.0.14393.9339 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_server_2016	to 10.0.14393.9339 (exc)
microsoft	windows_server_2019	to 10.0.17763.9020 (exc)
microsoft	windows_server_2022	to 10.0.20348.5386 (exc)
microsoft	windows_server_2025	to 10.0.26100.33158 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2525 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8875 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8875 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8875 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8875 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-269	The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

Executive Summary

This vulnerability is an improper privilege management issue in Windows Group Policy. An authorized attacker can exploit it to elevate their privileges locally on a system.

Detection Guidance

This vulnerability involves improper privilege management in Windows Group Policy. Detection requires checking Group Policy settings for misconfigurations that could allow privilege escalation. Review Group Policy Objects (GPOs) for unauthorized changes or excessive permissions. Use commands like 'gpresult /H report.html' to analyze applied policies and 'secedit /configure /cfg C:\temp\policy.inf /log C:\temp\log.txt' to validate policy settings.

Impact Analysis

An attacker could gain higher-level access to your system, allowing them to perform unauthorized actions such as installing software, accessing sensitive data, or modifying system settings.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, potentially violating compliance requirements under GDPR or HIPAA due to improper privilege escalation.

Mitigation Strategies

Apply the latest Windows security updates from Microsoft to address the improper privilege management in Group Policy. Monitor Group Policy settings for unauthorized changes and restrict local administrative privileges.

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