CVE-2026-50344

Analyzed Analyzed - Analysis Complete

Improper Authorization in Windows OLE

Publication date: 2026-07-14

Last updated on: 2026-07-23

Assigner: Microsoft Corporation

Description

Improper authorization in Windows OLE allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-14

Last Modified

2026-07-23

Generated

2026-08-03

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-02

NVD

CVE-2026-50344

EUVD

EUVD-2026-43935

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-285	The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

This vulnerability is an improper authorization issue in Windows OLE (Object Linking and Embedding). An authorized attacker can exploit it to elevate their privileges locally on a system.

Detection Guidance

This vulnerability involves improper authorization in Windows OLE leading to local privilege escalation. Detection requires checking for unauthorized privilege changes or suspicious OLE-related activities. Review Windows Event Logs for Event ID 4624 (successful logons) and Event ID 4672 (special privileges assigned). Use PowerShell commands like Get-WinEvent -LogName Security | Where-Object {$_.Id -eq 4672} to identify privilege assignments.

Impact Analysis

An attacker could gain higher-level access to your system, 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 to sensitive data, potentially violating GDPR (data protection) and HIPAA (health information privacy) compliance requirements.

Mitigation Strategies

Apply the latest security updates from Microsoft to address the improper authorization in Windows OLE. Monitor Microsoft's update guide for patches and install them promptly to prevent local privilege escalation.

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