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
142
Updates (KBs)
7
Actively exploited (KEV)
10
Critical Severity
30

CVEs affecting Windows 11 version 21H2

CVESeverityCVSSEPSSStatus
CVE-2024-38178High9.871%KEV
CVE-2024-38193High9.871%KEV
CVE-2024-38106High9.871%KEV
CVE-2024-38107High9.871%KEV
CVE-2024-43573High9.067%KEV
CVE-2024-43572High9.067%KEV
CVE-2024-38014High9.854%KEV
CVE-2024-38217High9.854%KEV
CVE-2024-43461High9.854%KEV
CVE-2024-38213High6.514%KEV
CVE-2024-38199Critical9.871%-
CVE-2024-38118Critical9.871%-
CVE-2024-38122Critical9.871%-
CVE-2024-38140Critical9.871%-
CVE-2024-38143Critical9.871%-
CVE-2024-38151Critical9.871%-
CVE-2024-38155Critical9.871%-
CVE-2024-38114High8.871%-
CVE-2024-38115High8.871%-
CVE-2024-38116High8.871%-
CVE-2024-38130High8.871%-
CVE-2024-38131High8.871%-
CVE-2024-38144High8.871%-
CVE-2024-38180High8.871%-
CVE-2024-43534Critical9.067%-
CVE-2024-43537Critical9.067%-
CVE-2024-43538Critical9.067%-
CVE-2024-43540Critical9.067%-
CVE-2024-43542Critical9.067%-
CVE-2024-43554Critical9.067%-
CVE-2024-37976Critical9.067%-
CVE-2024-37982Critical9.067%-
CVE-2024-37983Critical9.067%-
CVE-2024-43520Critical9.067%-
CVE-2024-43546Critical9.067%-
CVE-2024-43547Critical9.067%-
CVE-2024-43555Critical9.067%-
CVE-2024-43557Critical9.067%-
CVE-2024-43558Critical9.067%-
CVE-2024-43559Critical9.067%-
CVE-2024-43561Critical9.067%-
CVE-2024-43570Critical9.067%-
CVE-2024-43585Critical9.067%-
CVE-2024-43513Critical9.067%-
CVE-2024-38196High7.871%-
CVE-2024-38117High7.871%-
CVE-2024-38125High7.871%-
CVE-2024-38127High7.871%-
CVE-2024-38133High7.871%-
CVE-2024-38134High7.871%-
CVE-2024-38141High7.871%-
CVE-2024-38147High7.871%-
CVE-2024-38150High7.871%-
CVE-2024-38152High7.871%-
CVE-2024-38215High7.871%-
CVE-2024-38142High7.871%-
CVE-2024-38153High7.871%-
CVE-2024-43518High8.867%-
CVE-2024-43519High8.867%-
CVE-2024-43532High8.867%-
CVE-2024-43533High8.867%-
CVE-2024-6197High8.867%-
CVE-2024-43517High8.867%-
CVE-2024-43599High8.867%-
CVE-2024-38198High7.571%-
CVE-2024-38126High7.571%-
CVE-2024-38132High7.571%-
CVE-2024-38145High7.571%-
CVE-2024-38146High7.571%-
CVE-2024-38148High7.571%-
CVE-2024-43574High8.367%-
CVE-2022-3775High7.171%-
CVE-2024-43582High8.167%-
CVE-2024-38136High7.071%-
CVE-2024-38137High7.071%-
CVE-2024-30092High8.067%-
CVE-2024-38223Medium6.871%-
CVE-2024-43501High7.867%-
CVE-2024-43509High7.867%-
CVE-2024-43514High7.867%-
CVE-2024-43551High7.867%-
CVE-2024-43556High7.867%-
CVE-2024-43560High7.867%-
CVE-2024-43563High7.867%-
CVE-2024-43583High7.867%-
CVE-2024-43516High7.867%-
CVE-2024-43528High7.867%-
CVE-2024-43584High7.767%-
CVE-2024-43506High7.567%-
CVE-2024-43515High7.567%-
CVE-2024-38149High7.567%-
CVE-2024-43562High7.567%-
CVE-2024-43565High7.567%-
CVE-2024-43550High7.467%-
CVE-2024-43553High7.467%-
CVE-2024-43529High7.367%-
CVE-2024-43581High7.167%-
CVE-2024-43615High7.167%-
CVE-2024-20659High7.167%-
CVE-2024-43535High7.067%-
CVE-2024-43511High7.067%-
CVE-2024-43525Medium6.867%-
CVE-2024-43526Medium6.867%-
CVE-2024-43543Medium6.867%-
CVE-2024-43523Medium6.867%-
CVE-2024-43524Medium6.867%-
CVE-2024-43536Medium6.867%-
CVE-2024-38254Critical9.854%-
CVE-2024-38234Critical9.854%-
CVE-2024-38235Critical9.854%-
CVE-2024-38259High8.854%-
CVE-2024-38240High8.154%-
CVE-2024-21416High8.154%-
CVE-2024-38045High8.154%-
CVE-2024-38241High7.854%-
CVE-2024-38242High7.854%-
CVE-2024-38249High7.854%-
CVE-2024-38250High7.854%-
CVE-2024-38252High7.854%-
CVE-2024-38253High7.854%-
CVE-2024-38046High7.854%-
CVE-2024-38237High7.854%-
CVE-2024-38238High7.854%-
CVE-2024-38243High7.854%-
CVE-2024-38244High7.854%-
CVE-2024-38245High7.854%-
CVE-2024-38247High7.854%-
CVE-2024-30073High7.854%-
CVE-2024-38257High7.554%-
CVE-2024-38119High7.554%-
CVE-2024-38239High7.254%-
CVE-2024-38246High7.054%-
CVE-2024-38248High7.054%-
CVE-2022-2601High8.641%-
CVE-2023-40547High8.341%-
CVE-2024-38184High7.81.2%-
CVE-2024-38191High7.81.2%-
CVE-2024-38185High7.81.2%-
CVE-2024-38186High7.81.2%-
CVE-2024-38187High7.81.2%-
CVE-2024-38163High7.80.7%-
CVE-2024-38161Medium6.81.2%-

Updates (KBs) for Windows 11 version 21H2

UpdateReleasedSeverityCVSSEPSSCVEsStatus
KB50442802024-10-08High8.867%61KEV
KB50430672024-09-10High8.854%29KEV
KB50415922024-08-13Critical9.841%43KEV
KB50392132024-08-13Medium6.514%1KEV
KB50404312024-08-13High7.81.2%6-
KB50423212024-08-13High7.80.7%1-
KB50463982024-10-08Medium6.40.7%1-

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

Most searched on Senserva right now

KB5122876 install notes and severity KB5126052: the full CVE list KB5122882: patch details KB5123099: the full CVE list KB5120708 download and what it fixes KB5122871 install notes and severity KB5129235 install notes and severity KB5122878: patch details KB5120238 download and what it fixes KB5129238 download and what it fixes
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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