Patch tracker / Products / Windows 11 version 21H2

Windows 11 version 21H2: vulnerabilities and security updates

Every CVE affecting Windows 11 version 21H2 and the Microsoft update (KB) that fixes it, ranked by real-world risk. Actively exploited (CISA KEV) first, then EPSS exploit probability, on top of CVSS severity.

CVEs
1
Updates (KBs)
3
Actively exploited (KEV)
0
Critical Severity
0

CVEs affecting Windows 11 version 21H2

CVESeverityCVSSEPSSStatus
CVE-2024-38163High7.80.7%-

Updates (KBs) for Windows 11 version 21H2

UpdateReleasedSeverityCVSSEPSSCVEsStatus
KB50423202024-08-13High7.80.7%1-
KB50423212024-08-13High7.80.7%1-
KB50423222024-08-13High7.80.7%1-

Ranked across all products on the Microsoft patch tracker and the CVE and vulnerability management reference. Browse every product: product index.

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New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
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