Microsoft Windows Server version 20H2

Name: Microsoft Windows Server version 20H2
Brand: Microsoft

productEU

A product tracked in the threat graph; the vulnerabilities below are known to affect it.

by severity

4critical267high533medium111low

updated 2026-10-27

vulnerabilities (1,084)

Related CVEs.

sort

ID	severity	EPSS	exploitable	patched	published	affected
CVE-2021-31166US	high7.5OT critical	99.9% (100th)	KEV	10.0.19042.982	2021-05-11	10.0.0 → 10.0.19042.982
CVE-2021-34527US	high9.0OT critical	99.8% (100th)	KEV	10.0.19042.1083	2021-07-02	10.0.0 → 10.0.19042.1083
CVE-2020-1472US	high9.3OT critical	99.4% (100th)	KEV	publication	2020-08-17	10.0.0 → publication
CVE-2022-30190US	high9.3OT critical	99.2% (100th)	KEV	10.0.19042.1766	2022-06-01	10.0.0 → 10.0.19042.1766
CVE-2021-40444US	medium6.8OT critical	97.8% (100th)	KEV	10.0.19042.1237	2021-09-15	10.0.0 → 10.0.19042.1237
CVE-2021-1675US	high9.3OT critical	85.3% (100th)	KEV	10.0.19042.1052	2021-06-08	10.0.0 → 10.0.19042.1052
CVE-2022-26923US	high9.0OT critical	83.5% (100th)	KEV	10.0.19042.1706	2022-05-10	10.0.0 → 10.0.19042.1706
CVE-2021-40449US	medium4.6OT critical	81.9% (100th)	KEV	10.0.19042.1288	2021-10-13	10.0.0 → 10.0.19042.1288
CVE-2021-31955US	low2.1OT critical	81.1% (100th)	KEV	10.0.19042.1052	2021-06-08	10.0.0 → 10.0.19042.1052
CVE-2021-1732US	medium4.6OT critical	78.4% (100th)	KEV	publication	2021-02-25	10.0.0 → publication
CVE-2021-42287US	medium6.5OT critical	77.2% (100th)	KEV	10.0.19041.1348	2021-11-10	10.0.0 → 10.0.19041.1348
CVE-2021-42278US	medium6.5OT critical	73.3% (99th)	KEV	10.0.19042.1348	2021-11-10	10.0.0 → 10.0.19042.1348
CVE-2021-36942US	medium5.0OT critical	66.0% (99th)	KEV	10.0.19042.1165	2021-08-12	10.0.0 → 10.0.19042.1165
CVE-2022-21882US	high7.8OT critical	59.2% (99th)	KEV	10.0.19042.1466	2022-01-11	10.0.0 → 10.0.19042.1466
CVE-2022-21971US	high9.3OT critical	53.8% (99th)	KEV	10.0.19042.1526	2022-02-09	10.0.0 → 10.0.19042.1526
CVE-2022-21999US	medium4.6OT critical	41.0% (99th)	KEV	10.0.19042.1526	2022-02-09	10.0.0 → 10.0.19042.1526
CVE-2021-31956US	high9.3OT critical	22.3% (98th)	KEV	10.0.19042.1052	2021-06-08	10.0.0 → 10.0.19042.1052
CVE-2022-22718US	high7.2OT critical	18.5% (97th)	KEV	10.0.19042.1526	2022-02-09	10.0.0 → 10.0.19042.1526
CVE-2022-26904US	medium4.4OT critical	16.9% (97th)	KEV	10.0.19042.1645	2022-04-15	10.0.0 → 10.0.19042.1645
CVE-2021-34486US	medium4.6OT critical	9.25% (95th)	KEV	10.0.19042.1165	2021-08-12	10.0.0 → 10.0.19042.1165
CVE-2021-28310US	medium4.6OT critical	8.40% (95th)	KEV	publication	2021-04-13	10.0.0 → publication
CVE-2022-24521US	medium4.6OT critical	7.13% (94th)	KEV	10.0.19042.1645	2022-04-15	10.0.0 → 10.0.19042.1645
CVE-2021-33739US	medium4.6OT critical	6.55% (94th)	KEV	10.0.19042.1052	2021-06-08	10.0.0 → 10.0.19042.1052
CVE-2020-17087US	high7.2OT critical	5.43% (93rd)	KEV	publication	2020-11-11	10.0.0 → publication
CVE-2021-36955US	medium4.6OT critical	4.07% (91st)	KEV	10.0.19042.1237	2021-09-15	10.0.0 → 10.0.19042.1237
CVE-2021-43226US	high7.8OT critical	3.28% (88th)	KEV	10.0.19042.1415	2021-12-15	10.0.0 → 10.0.19042.1415
CVE-2022-34713US	—OT critical	67.8% (99th)	KEV	10.0.19042.1889	2022-08-09	10.0.0 → 10.0.19042.1889
CVE-2021-36948US	medium4.6OT critical	23.3% (98th)	KEV	10.0.19042.1165	2021-08-12	10.0.0 → 10.0.19042.1165
CVE-2021-34484US	medium4.6OT critical	21.8% (98th)	KEV	10.0.19042.1165	2021-08-12	10.0.0 → 10.0.19042.1165
CVE-2021-41379US	medium4.6OT critical	19.5% (97th)	KEV	10.0.19042.1348	2021-11-10	10.0.0 → 10.0.19042.1348
CVE-2022-22047US	high7.2OT critical	18.8% (97th)	KEV	10.0.19042.1826	2022-07-12	10.0.0 → 10.0.19042.1826
CVE-2022-26925US	medium5.9OT critical	10.5% (96th)	KEV	10.0.19042.1706	2022-05-10	10.0.0 → 10.0.19042.1706
CVE-2021-33771US	high7.2OT critical	10.2% (96th)	KEV	10.0.19042.1110	2021-07-14	10.0.0 → 10.0.19042.1110
CVE-2021-31979US	high7.2OT critical	4.54% (92nd)	KEV	10.0.19042.1110	2021-07-14	10.0.0 → 10.0.19042.1110
CVE-2021-31199US	medium4.6OT critical	2.95% (87th)	KEV	10.0.19042.1052	2021-06-08	10.0.0 → 10.0.19042.1052
CVE-2021-31201US	medium4.6OT critical	2.62% (85th)	KEV	10.0.19042.1052	2021-06-08	10.0.0 → 10.0.19042.1052
CVE-2022-21919US	medium6.9OT critical	2.43% (84th)	KEV	10.0.19042.1466	2022-01-11	10.0.0 → 10.0.19042.1466
CVE-2021-41357US	medium4.6OT critical	1.58% (75th)	KEV	10.0.19042.1288	2021-10-13	10.0.0 → 10.0.19042.1288
CVE-2021-40450US	medium4.6OT critical	1.58% (75th)	KEV	10.0.19042.1288	2021-10-13	10.0.0 → 10.0.19042.1288
CVE-2022-21907US	high10.0	92.8% (100th)	Exploit	10.0.19042.1466	2022-01-11	10.0.0 → 10.0.19042.1466
CVE-2022-26809US	high10.0	91.0% (100th)	Exploit	10.0.19042.1645	2022-04-15	10.0.0 → 10.0.19042.1645
CVE-2022-30216US	medium6.5	88.6% (100th)	Exploit	10.0.19042.1826	2022-07-12	10.0.0 → 10.0.19042.1826
CVE-2022-26937US	high7.5	76.0% (100th)	Exploit	10.0.19042.1706	2022-05-10	10.0.0 → 10.0.19042.1706
CVE-2022-23270US	high9.3	70.3% (99th)	Exploit	10.0.19042.1706	2022-05-10	10.0.0 → 10.0.19042.1706
CVE-2021-24086US	medium5.0	59.0% (99th)	Exploit	publication	2021-02-25	10.0.0 → publication
CVE-2026-49160US	—	56.6% (99th)	Exploit	no fix	2026-06-09	≤ vers:unknown/*
CVE-2022-23253US	medium4.0	56.4% (99th)	Exploit	10.0.19042.1586	2022-03-09	10.0.0 → 10.0.19042.1586
CVE-2021-34481US	high7.5	47.7% (99th)	Exploit	10.0.19042.1165	2021-07-16	10.0.0 → 10.0.19042.1165
CVE-2021-28476US	medium6.5	39.2% (99th)	Exploit	10.0.19042.982	2021-05-11	10.0.0 → 10.0.19042.982
CVE-2022-24500US	medium6.8	38.0% (99th)	Exploit	10.0.19042.1645	2022-04-15	10.0.0 → 10.0.19042.1645

showing 50 of 1,084

weaknesses (8)

The flaw types (CWEs) most of these CVEs share.

CWE-269Improper Privilege Management288 CVEs
CWE-264CWE-264226 CVEs
CWE-200Exposure of Sensitive Information to an Unauthorized Actor144 CVEs
CWE-94Improper Control of Generation of Code ('Code Injection')143 CVEs
CWE-20Improper Input Validation118 CVEs
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')71 CVEs
CWE-416Use After Free54 CVEs
CWE-254CWE-25435 CVEs

sources (2)

Which sources assert this record, and when.

EUEU Vulnerability Database (ENISA)965 CVEs
NLNCSC-NL (CSAF)119 CVEs

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