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

152

Updates (KBs)

Actively exploited (KEV)

Critical Severity

CVEs affecting Windows 10 Version 21H2

CVE	Severity	CVSS	EPSS	Status
CVE-2024-49039	High	8.8	82%	KEVRansomware
CVE-2024-43451	Medium	6.5	82%	KEV
CVE-2024-43639	Critical	9.8	82%	-
CVE-2024-43627	High	8.8	82%	-
CVE-2024-43628	High	8.8	82%	-
CVE-2024-43620	High	8.8	82%	-
CVE-2024-43621	High	8.8	82%	-
CVE-2024-43622	High	8.8	82%	-
CVE-2024-43624	High	8.8	82%	-
CVE-2024-43635	High	8.8	82%	-
CVE-2025-21293	High	8.8	81%	-
CVE-2024-43625	High	8.1	82%	-
CVE-2024-43447	High	8.1	82%	-
CVE-2024-43530	High	7.8	82%	-
CVE-2024-43623	High	7.8	82%	-
CVE-2024-43626	High	7.8	82%	-
CVE-2024-43630	High	7.8	82%	-
CVE-2024-43644	High	7.8	82%	-
CVE-2024-49046	High	7.8	82%	-
CVE-2024-43629	High	7.8	82%	-
CVE-2024-43636	High	7.8	82%	-
CVE-2024-43640	High	7.8	82%	-
CVE-2024-43641	High	7.8	82%	-
CVE-2024-43516	High	7.8	82%	-
CVE-2024-43528	High	7.8	82%	-
CVE-2024-49019	High	7.8	82%	-
CVE-2024-43452	High	7.5	82%	-
CVE-2024-43450	High	7.5	82%	-
CVE-2024-43642	High	7.5	82%	-
CVE-2024-43511	High	7.0	82%	-
CVE-2024-43634	Medium	6.8	82%	-
CVE-2024-43637	Medium	6.8	82%	-
CVE-2024-43638	Medium	6.8	82%	-
CVE-2024-43643	Medium	6.8	82%	-
CVE-2024-43449	Medium	6.8	82%	-
CVE-2024-43646	Medium	6.7	82%	-
CVE-2024-43631	Medium	6.7	82%	-
CVE-2024-43633	Medium	6.5	82%	-
CVE-2024-38203	Medium	6.2	82%	-
CVE-2024-38264	Medium	5.9	82%	-
CVE-2025-54106	High	8.8	20%	-
CVE-2025-54110	High	8.8	20%	-
CVE-2025-54918	High	8.8	20%	-
CVE-2025-54107	High	8.8	20%	-
CVE-2025-54113	High	8.8	20%	-
CVE-2025-54917	High	8.8	20%	-
CVE-2025-55234	High	8.8	20%	-
CVE-2025-59290	High	7.8	20%	-
CVE-2025-54102	High	7.8	20%	-
CVE-2025-54111	High	7.8	20%	-
CVE-2025-54894	High	7.8	20%	-
CVE-2025-54895	High	7.8	20%	-
CVE-2025-54913	High	7.8	20%	-
CVE-2025-54916	High	7.8	20%	-
CVE-2025-55228	High	7.8	20%	-
CVE-2025-53800	High	7.8	20%	-
CVE-2025-53801	High	7.8	20%	-
CVE-2025-54091	High	7.8	20%	-
CVE-2025-54092	High	7.8	20%	-
CVE-2025-54098	High	7.8	20%	-
CVE-2025-54912	High	7.8	20%	-
CVE-2025-55224	High	7.8	20%	-
CVE-2025-59502	High	7.5	20%	-
CVE-2025-54919	High	7.5	20%	-
CVE-2025-53805	High	7.5	20%	-
CVE-2025-54103	High	7.4	20%	-
CVE-2025-55236	High	7.3	20%	-
CVE-2025-54116	High	7.3	20%	-
CVE-2025-54911	High	7.3	20%	-
CVE-2025-59289	High	7.0	20%	-
CVE-2025-49734	High	7.0	20%	-
CVE-2025-54099	High	7.0	20%	-
CVE-2025-55223	High	7.0	20%	-
CVE-2025-53802	High	7.0	20%	-
CVE-2025-53807	High	7.0	20%	-
CVE-2025-54093	High	7.0	20%	-
CVE-2025-54112	High	7.0	20%	-
CVE-2025-54114	High	7.0	20%	-
CVE-2025-54115	High	7.0	20%	-
CVE-2025-59220	High	7.0	20%	-
CVE-2025-54105	High	7.0	20%	-
CVE-2025-59215	High	7.0	20%	-
CVE-2025-54108	High	7.0	20%	-
CVE-2025-59216	High	7.0	20%	-
CVE-2025-55226	Medium	6.7	20%	-
CVE-2025-53808	Medium	6.7	20%	-
CVE-2025-53810	Medium	6.7	20%	-
CVE-2025-54094	Medium	6.7	20%	-
CVE-2025-54104	Medium	6.7	20%	-
CVE-2025-54109	Medium	6.7	20%	-
CVE-2025-54915	Medium	6.7	20%	-
CVE-2025-48807	Medium	6.7	20%	-
CVE-2025-53797	Medium	6.5	20%	-
CVE-2025-53798	Medium	6.5	20%	-
CVE-2025-54095	Medium	6.5	20%	-
CVE-2025-54096	Medium	6.5	20%	-
CVE-2025-54097	Medium	6.5	20%	-
CVE-2025-55225	Medium	6.5	20%	-
CVE-2025-53796	Medium	6.5	20%	-
CVE-2025-53806	Medium	6.5	20%	-
CVE-2025-53809	Medium	6.5	20%	-
CVE-2025-53799	Medium	5.5	20%	-
CVE-2025-53803	Medium	5.5	20%	-
CVE-2025-53804	Medium	5.5	20%	-
CVE-2025-54101	Medium	4.8	20%	-
CVE-2026-23669	High	8.8	4.7%	-
CVE-2026-25177	High	8.8	4.7%	-
CVE-2026-25188	High	8.8	4.7%	-
CVE-2026-24283	High	8.8	4.7%	-
CVE-2026-25172	High	8.0	4.7%	-
CVE-2026-25173	High	8.0	4.7%	-
CVE-2026-26111	High	8.0	4.7%	-
CVE-2026-23672	High	7.8	4.7%	-
CVE-2026-23673	High	7.8	4.7%	-
CVE-2026-24287	High	7.8	4.7%	-
CVE-2026-24290	High	7.8	4.7%	-
CVE-2026-24291	High	7.8	4.7%	-
CVE-2026-24292	High	7.8	4.7%	-
CVE-2026-24294	High	7.8	4.7%	-
CVE-2026-25165	High	7.8	4.7%	-
CVE-2026-25174	High	7.8	4.7%	-
CVE-2026-25175	High	7.8	4.7%	-
CVE-2026-25176	High	7.8	4.7%	-
CVE-2026-25187	High	7.8	4.7%	-
CVE-2026-25189	High	7.8	4.7%	-
CVE-2026-25190	High	7.8	4.7%	-
CVE-2026-26128	High	7.8	4.7%	-
CVE-2026-24289	High	7.8	4.7%	-
CVE-2026-26132	High	7.8	4.7%	-
CVE-2026-24293	High	7.8	4.7%	-
CVE-2026-25181	High	7.5	4.7%	-
CVE-2026-23674	High	7.5	4.7%	-
CVE-2026-25167	High	7.4	4.7%	-
CVE-2026-23667	High	7.0	4.7%	-
CVE-2026-23668	High	7.0	4.7%	-
CVE-2026-23671	High	7.0	4.7%	-
CVE-2026-24285	High	7.0	4.7%	-
CVE-2026-24295	High	7.0	4.7%	-
CVE-2026-24296	High	7.0	4.7%	-
CVE-2026-25171	High	7.0	4.7%	-
CVE-2026-25178	High	7.0	4.7%	-
CVE-2026-25179	High	7.0	4.7%	-
CVE-2026-25170	High	7.0	4.7%	-
CVE-2026-24288	Medium	6.8	4.7%	-
CVE-2024-38163	High	7.8	0.7%	-
CVE-2026-24297	Medium	6.5	4.7%	-
CVE-2026-25168	Medium	6.2	4.7%	-
CVE-2026-25169	Medium	6.2	4.7%	-
CVE-2026-24282	Medium	5.5	4.7%	-
CVE-2026-25180	Medium	5.5	4.7%	-
CVE-2026-25186	Medium	5.5	4.7%	-
CVE-2026-25185	Medium	5.3	4.7%	-

Updates (KBs) for Windows 10 Version 21H2

Update	Released	Severity	CVSS	EPSS	CVEs	Status
KB5046616	2024-11-12	Critical	9.8	82%	37	KEVRansomware
KB5046698	2024-11-12	Critical	9.8	82%	37	KEVRansomware
KB5046613	2024-11-12	High	8.8	82%	31	KEVRansomware
KB5046633	2024-11-12	High	8.8	82%	34	KEVRansomware
KB5065306	2025-10-14	High	8.8	20%	59	-
KB5065425	2025-10-14	High	8.8	20%	61	-
KB5065426	2025-10-14	High	8.8	20%	64	-
KB5065429	2025-10-14	High	8.8	20%	49	-
KB5065431	2025-10-14	High	8.8	20%	50	-
KB5065432	2025-10-14	High	8.8	20%	59	-
KB5065474	2025-10-14	High	8.8	20%	64	-
KB5078752	2026-03-10	High	8.8	4.7%	40	-
KB5078883	2026-03-10	High	8.8	4.7%	41	-
KB5078885	2026-03-10	High	8.8	4.7%	43	-
KB5079420	2026-03-10	High	8.8	4.7%	38	-
KB5079466	2026-03-10	High	8.8	4.7%	40	-
KB5079473	2026-03-10	High	8.8	4.7%	41	-
KB5042320	2024-08-13	High	7.8	0.7%	1	-
KB5042321	2024-08-13	High	7.8	0.7%	1	-
KB5042322	2024-08-13	High	7.8	0.7%	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

KB5099540: the full CVE list KB5099538: patch details KB5094123: the full CVE list KB5099539 install notes and severity KB5101650: patch details CVE-2026-50522 exploit status KB5101001: the full CVE list CVE-2026-53412: severity and the patch KB5102334: the full CVE list KB5101010 install notes and severity