CVE-2021-33771CISA KEVEPSS p92.6%

CVE-2021-33771Microsoft Windows Kernel Privilege Escalation Vulnerability

Microsoft / Windows

Description

Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.

Scoring

EPSS6.20% probability of exploitation · percentile 92.6% · 2026-06-18T12:00:27Z

CISA KEV entry

Added to KEV: 2021-11-03

(incoming)1

TypeTargetConfidenceTier
KEVEntryMicrosoft Windows Kernel Privilege Escalation Vulnerabilitykev-cve-2021-337710%live

Related by meaning· 4

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
Microsoft Win32k Privilege Escalation Vulnerability
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CVE-2025-33067
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CVE-2026-40369
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Microsoft Windows Win32k Privilege Escalation Vulnerability
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.