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CVE-2026-21533

KEV

Microsoft Windows Improper Privilege Management Vulnerability

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Vendor / Project
Microsoft
Product
Windows
Date added
Feb 10, 2026
Due date
Mar 3, 2026
Known ransomware use
Unknown
CWEs
CWE-269

Description

Microsoft Windows Remote Desktop Services contains an improper privilege management vulnerability that could allow an authorized attacker to elevate privileges locally.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes