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CVE-2026-21533: Microsoft Windows

EPSS4.1%No. 1448 of 1739 in KEV
CVE year2026listed the same year
Same vendor in KEV389
Same product174
FieldValue
VendorMicrosoft
ProductWindows
NameMicrosoft Windows Improper Privilege Management Vulnerability
Added to KEV2026-02-10
US federal due date2026-03-03
Ransomware useUnknown
CWECWE-269

CISA description

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

Other entries for this product

CVEVendor / productAddedEPSSRansomware
CVE-2026-85880Microsoft Windows2026-09-083.6%Unknown
CVE-2026-81963Microsoft Windows2026-09-080.3%Unknown
CVE-2008-4250Microsoft Windows2026-05-2098.7%Unknown
CVE-2026-32202Microsoft Windows2026-04-284.9%Unknown
CVE-2025-60710Microsoft Windows2026-04-134.5%Known
CVE-2023-36424Microsoft Windows2026-04-1312.1%Unknown
CVE-2008-0015Microsoft Windows2026-02-1776.5%Unknown
CVE-2026-21525Microsoft Windows2026-02-104.8%Unknown
CVE-2026-21519Microsoft Windows2026-02-102.4%Unknown
CVE-2026-21513Microsoft Windows2026-02-1015.8%Unknown
CVE-2026-21510Microsoft Windows2026-02-1024.5%Unknown
CVE-2026-20805Microsoft Windows2026-01-137.2%Unknown
CVE-2025-62221Microsoft Windows2025-12-092.5%Unknown
CVE-2025-62215Microsoft Windows2025-11-125.9%Unknown
CVE-2025-59287Microsoft Windows2025-10-2499.9%Unknown

NVD — CVE-2026-21533

Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page

A Microsoft Windows vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2026-02-10.