Windows Remote Desktop Services Elevation of Privilege Vulnerability
CVSS v3
7.8
HIGH
EPSS Score
20.2%
exploit probability
CISA KEV
Yes
known exploited
Exploitation
active
SSVC status
Improper privilege management in Windows Remote Desktop allows an authorized attacker to elevate privileges locally.
Improper privilege management in Windows Remote Desktop allows an authorized attacker to elevate privileges locally.
Yes. CVE-2026-21533 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 3/3/2026.
CVE-2026-21533 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string 3.1.
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Ranked by exploit probability (EPSS).