CVE-2026-21533: Microsoft Windows Improper Privilege Management Vulnerability

CVE ID

CVE-2026-21533

Vulnerability Name

Microsoft Windows Improper Privilege Management Vulnerability

• Project: Microsoft
• Product: Windows

Date

• Date Added: 2026-02-10
• Due Date: 2026-03-03

Description

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

Known To Be Used in Ransomware Campaigns?

Unknown

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.

Additional Notes

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21533 ; https://nvd.nist.gov/vuln/detail/CVE-2026-21533

Related Security News

• Microsoft Patches 59 Vulnerabilities Including Six Actively Exploited Zero-Days

More CVEs Info

Common Vulnerabilities & Exposures (CVE) List