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CVE-2026-21533CISA KEV

Microsoft Windows Improper Privilege Management Vulnerability

CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.

CISA KEV Check MSRC

CISA catalog record

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

Product
Windows
Added to KEV
10 Feb 2026
Federal remediation due
3 Mar 2026
Known ransomware use
Not reported
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