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Exploited Added to CISA's list February 10, 2026

Microsoft Windows: Improper Privilege Management Vulnerability

What to do: Run Windows Update and restart the PC.

Affects
Microsoft Windows
Identifier
CVE-2026-21533
What it is
Microsoft Windows Remote Desktop Services contains an improper privilege management vulnerability that could allow an authorized attacker to elevate privileges locally.
Official guidance
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Details
National Vulnerability Database entry

"Exploited" means CISA has evidence attackers are using this flaw. Being on the list does not mean your device was attacked; it means the update matters.