Patch tracker / Products / Windows 10 Version 21H2

Windows 10 Version 21H2: vulnerabilities and security updates

Every CVE affecting Windows 10 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
2286
Updates (KBs)
30
Actively exploited (KEV)
47
Critical Severity
505

CVEs affecting Windows 10 Version 21H2

CVESeverityCVSSEPSSStatus
CVE-2024-49039High8.884%KEVRansomware
CVE-2025-26633High7.059%KEVRansomware
CVE-2025-29824High7.814%KEVRansomware
CVE-2025-33053High8.887%KEV
CVE-2025-33073High8.887%KEV
CVE-2024-49138High7.884%KEV
CVE-2025-21333High7.881%KEV
CVE-2025-21334High7.881%KEV
CVE-2025-21335High7.881%KEV
CVE-2024-43451Medium6.584%KEV
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-2025-30400High7.864%KEV
CVE-2025-32701High7.864%KEV
CVE-2025-32706High7.864%KEV
CVE-2025-32709High7.864%KEV
CVE-2025-30397High7.564%KEV
CVE-2026-20805Medium5.571%KEV
CVE-2024-38014High9.854%KEV
CVE-2024-38217High9.854%KEV
CVE-2024-43461High9.854%KEV
CVE-2025-24985High7.859%KEV
CVE-2025-24993High7.859%KEV
CVE-2025-24054Medium6.559%KEV
CVE-2025-24991Medium5.559%KEV
CVE-2025-24984Medium4.659%KEV
CVE-2025-21418High7.840%KEV
CVE-2025-21391High7.140%KEV
CVE-2026-21513High8.824%KEV
CVE-2026-21510High8.824%KEV
CVE-2026-21519High7.824%KEV
CVE-2026-21533High7.824%KEV
CVE-2026-21525Medium6.224%KEV
CVE-2026-33824Critical9.82.0%KEV
CVE-2024-38213High6.514%KEV
CVE-2025-24990High7.86.4%KEV
CVE-2025-59230High7.86.4%KEV
CVE-2025-62221High7.84.6%KEV
CVE-2026-85880High7.83.6%KEV
CVE-2025-62215High7.06.0%KEV
CVE-2026-68820High7.01.2%KEV
CVE-2025-47827Medium4.66.4%KEV
CVE-2026-32202Medium4.34.9%KEV
CVE-2024-38203Critical9.884%-
CVE-2024-43646Critical9.884%-
CVE-2024-43631Critical9.884%-
CVE-2024-49087Critical9.884%-
CVE-2024-49094Critical9.884%-
CVE-2024-49098Critical9.884%-
CVE-2024-49099Critical9.884%-
CVE-2024-49101Critical9.884%-
CVE-2024-49103Critical9.884%-
CVE-2024-49111Critical9.884%-
CVE-2024-49081Critical9.884%-
CVE-2024-49112Critical9.884%-
CVE-2024-49109Critical9.884%-
CVE-2025-32715High8.887%-
CVE-2025-32719High8.887%-
CVE-2025-32720High8.887%-
CVE-2025-32722High8.887%-
CVE-2025-33058High8.887%-
CVE-2025-33059High8.887%-
CVE-2025-33060High8.887%-
CVE-2025-33061High8.887%-
CVE-2025-33062High8.887%-
CVE-2025-33063High8.887%-
CVE-2025-33064High8.887%-
CVE-2025-33065High8.887%-
CVE-2025-33066High8.887%-
CVE-2025-47160High8.887%-
CVE-2025-24068High8.887%-
CVE-2025-24069High8.887%-
CVE-2025-24065High8.887%-
CVE-2025-33052High8.887%-
CVE-2025-33055High8.887%-
CVE-2025-33057High8.887%-
CVE-2025-3052High8.887%-
CVE-2025-33067High8.487%-
CVE-2024-7344Critical9.881%-
CVE-2025-21189Critical9.881%-
CVE-2025-21202Critical9.881%-
CVE-2025-21210Critical9.881%-
CVE-2025-21213Critical9.881%-
CVE-2025-21214Critical9.881%-
CVE-2025-21215Critical9.881%-
CVE-2025-21217Critical9.881%-
CVE-2025-21219Critical9.881%-
CVE-2025-21226Critical9.881%-
CVE-2025-21227Critical9.881%-
CVE-2025-21228Critical9.881%-
CVE-2025-21229Critical9.881%-
CVE-2025-21232Critical9.881%-
CVE-2025-21242Critical9.881%-
CVE-2025-21249Critical9.881%-
CVE-2025-21255Critical9.881%-
CVE-2025-21256Critical9.881%-
CVE-2025-21257Critical9.881%-
CVE-2025-21258Critical9.881%-
CVE-2025-21260Critical9.881%-
CVE-2025-21261Critical9.881%-
CVE-2025-21263Critical9.881%-
CVE-2025-21265Critical9.881%-
CVE-2025-21268Critical9.881%-
CVE-2025-21269Critical9.881%-
CVE-2025-21272Critical9.881%-
CVE-2025-21274Critical9.881%-
CVE-2025-21278Critical9.881%-
CVE-2025-21280Critical9.881%-
CVE-2025-21284Critical9.881%-
CVE-2025-21288Critical9.881%-
CVE-2025-21298Critical9.881%-
CVE-2025-21301Critical9.881%-
CVE-2025-21307Critical9.881%-
CVE-2025-21308Critical9.881%-
CVE-2025-21310Critical9.881%-
CVE-2025-21312Critical9.881%-
CVE-2025-21314Critical9.881%-
CVE-2025-21316Critical9.881%-
CVE-2025-21317Critical9.881%-
CVE-2025-21318Critical9.881%-
CVE-2025-21319Critical9.881%-
CVE-2025-21320Critical9.881%-
CVE-2025-21321Critical9.881%-
CVE-2025-21323Critical9.881%-
CVE-2025-21324Critical9.881%-
CVE-2025-21327Critical9.881%-
CVE-2025-21328Critical9.881%-
CVE-2025-21329Critical9.881%-
CVE-2025-21332Critical9.881%-
CVE-2025-21336Critical9.881%-
CVE-2025-21340Critical9.881%-
CVE-2025-21341Critical9.881%-
CVE-2025-21374Critical9.881%-
CVE-2025-33070High8.187%-
CVE-2024-43627High8.884%-
CVE-2024-43628High8.884%-
CVE-2024-43620High8.884%-
CVE-2024-43621High8.884%-
CVE-2024-43622High8.884%-
CVE-2024-43624High8.884%-
CVE-2024-43635High8.884%-
CVE-2024-49102High8.884%-
CVE-2024-49104High8.884%-
CVE-2024-49080High8.884%-
CVE-2025-32712High7.887%-
CVE-2025-32713High7.887%-
CVE-2025-32714High7.887%-
CVE-2025-32716High7.887%-
CVE-2025-32718High7.887%-
CVE-2025-33075High7.887%-
CVE-2025-32724High7.587%-
CVE-2025-33056High7.587%-
CVE-2024-49105High8.484%-
CVE-2025-32721High7.387%-
CVE-2024-49122High8.184%-
CVE-2024-49124High8.184%-
CVE-2024-49126High8.184%-
CVE-2024-49118High8.184%-
CVE-2024-49127High8.184%-
CVE-2024-49123High8.184%-
CVE-2024-49132High8.184%-
CVE-2025-21223High8.881%-
CVE-2025-21233High8.881%-
CVE-2025-21236High8.881%-
CVE-2025-21237High8.881%-
CVE-2025-21238High8.881%-
CVE-2025-21239High8.881%-
CVE-2025-21240High8.881%-
CVE-2025-21241High8.881%-
CVE-2025-21243High8.881%-
CVE-2025-21244High8.881%-
CVE-2025-21245High8.881%-
CVE-2025-21246High8.881%-
CVE-2025-21248High8.881%-
CVE-2025-21250High8.881%-
CVE-2025-21252High8.881%-
CVE-2025-21266High8.881%-
CVE-2025-21273High8.881%-
CVE-2025-21282High8.881%-
CVE-2025-21286High8.881%-
CVE-2025-21291High8.881%-
CVE-2025-21292High8.881%-
CVE-2025-21293High8.881%-
CVE-2025-21302High8.881%-
CVE-2025-21303High8.881%-
CVE-2025-21305High8.881%-
CVE-2025-21306High8.881%-
CVE-2025-21339High8.881%-
CVE-2025-21409High8.881%-
CVE-2025-21411High8.881%-
CVE-2025-21413High8.881%-
CVE-2025-21417High8.881%-
CVE-2024-43530High7.884%-
CVE-2024-43623High7.884%-
CVE-2024-43626High7.884%-
CVE-2024-43630High7.884%-
CVE-2024-43644High7.884%-
CVE-2024-49046High7.884%-
CVE-2024-43629High7.884%-
CVE-2024-43636High7.884%-
CVE-2024-43640High7.884%-
CVE-2024-43641High7.884%-
CVE-2024-49074High7.884%-
CVE-2024-49072High7.884%-
CVE-2024-49076High7.884%-
CVE-2024-49079High7.884%-
CVE-2024-49088High7.884%-
CVE-2024-49090High7.884%-
CVE-2024-49114High7.884%-
CVE-2024-43452High7.584%-
CVE-2024-49096High7.584%-
CVE-2024-49121High7.584%-
CVE-2024-49113High7.584%-
CVE-2024-49075High7.584%-
CVE-2025-21224High8.181%-
CVE-2025-21294High8.181%-
CVE-2025-21295High8.181%-
CVE-2024-49107High7.384%-
CVE-2024-49089High7.284%-
CVE-2025-21234High7.881%-
CVE-2025-21235High7.881%-
CVE-2025-21271High7.881%-
CVE-2025-21275High7.881%-
CVE-2025-21281High7.881%-
CVE-2025-21287High7.881%-
CVE-2025-21304High7.881%-
CVE-2025-21325High7.881%-
CVE-2025-21338High7.881%-
CVE-2025-21378High7.881%-
CVE-2025-21382High7.881%-
CVE-2024-49084High7.084%-
CVE-2024-49097High7.084%-
CVE-2024-49095High7.084%-
CVE-2024-43634Medium6.884%-
CVE-2024-43637Medium6.884%-
CVE-2024-43638Medium6.884%-
CVE-2024-43643Medium6.884%-
CVE-2024-43449Medium6.884%-
CVE-2024-49073Medium6.884%-
CVE-2024-49092Medium6.884%-
CVE-2024-49077Medium6.884%-
CVE-2024-49078Medium6.884%-
CVE-2024-49082Medium6.884%-
CVE-2024-49083Medium6.884%-
CVE-2024-49110Medium6.884%-
CVE-2025-21207High7.581%-

Showing the 250 highest-risk of 2286 CVEs. See all in the CVE reference.

Updates (KBs) for Windows 10 Version 21H2

UpdateReleasedSeverityCVSSEPSSCVEsStatus
KB50466132024-11-12High8.884%28KEVRansomware
KB50536062025-03-11High8.859%30KEVRansomware
KB50555182025-04-08High8.814%59KEVRansomware
KB50486522024-12-10Critical9.884%45KEV
KB50605332025-06-10High8.887%34KEV
KB50499812025-01-14Critical9.881%121KEV
KB50737242026-01-13Critical9.871%73KEV
KB50415802024-08-13Critical9.871%43KEV
KB50442732024-10-08High8.867%56KEV
KB50430642024-09-10High8.854%29KEV
KB50519742025-03-11High8.840%32KEV
KB50583792025-08-12High8.827%36KEV
KB50759122026-02-10High8.824%24KEV
KB50667912025-12-09Critical9.96.4%98KEV
KB50687812025-12-09Critical9.86.0%33KEV
KB50995392026-07-14Critical9.94.9%314KEV
KB51228782026-09-08Critical9.83.6%568KEV
KB50822002026-04-14Critical9.82.0%107KEV
KB50392112024-08-13Medium6.514%1KEV
KB50715462025-12-09High8.82.5%28KEV
KB51202492026-08-11High8.81.2%160KEV
KB50637092025-08-12Critical9.848%44-
KB50625542025-08-12Critical9.833%75-
KB50654292025-10-14High8.820%49-
KB50941272026-06-09Critical9.82.3%148-
KB50788852026-03-10High8.84.7%43-
KB50875442026-05-12High8.82.2%54-
KB50404272024-08-13High7.81.2%6-
KB50423202024-08-13High7.80.7%1-
KB50464002024-10-08Medium6.40.7%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.
All information provided as is, without warranty; verify against the vendor advisory before acting. All information and usage is subject to the Senserva EULA. Data notice and terms.