CRITICALExploited in the wildUnknown

Microsoft Windows Improper Privilege Management Vulnerability

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

CVE-2026-21533Published 5 months agoSource: CISA KEV

Affected packages

No package-level mapping for this advisory.

Exploit signal

Known exploited (CISA KEV)
Yes
EPSS score
3.85%
EPSS percentile
89.1%

EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs. This advisory is in the top 89%.

Sources

No external sources available.

Recommended response stack

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Microsoft Windows Improper Privilege Management Vulnerability | HackTribune