Windows 10 21H2

March 2026 Security Update • 2026-03-10 • 10.0.19044.7058 •

Out of Support Patch Tuesday 43 CVEs

+28d ▼

28 days since previous release · Addresses 43 security issues

ℹ️ Addresses 43 security issues

Recommendation: Update to stay secure — security fixes available

KB Article

KB5078885

Build

10.0.19044.7058

Vulnerabilities

43

Days to Prev.

28

Supersedes

KB5075912

CVEs (43)

CVE-2026-23xx (7 CVEs) ▼

CVE-2026-23667 CVE-2026-23668 CVE-2026-23669 CVE-2026-23671 CVE-2026-23672 CVE-2026-23673 CVE-2026-23674

CVE-2026-24xx (13 CVEs) ▼

CVE-2026-24282 CVE-2026-24285 CVE-2026-24287 CVE-2026-24288 CVE-2026-24289 CVE-2026-24290 CVE-2026-24291 CVE-2026-24292 CVE-2026-24293 CVE-2026-24294 CVE-2026-24295 CVE-2026-24296 CVE-2026-24297

CVE-2026-25xx (20 CVEs) ▼

CVE-2026-25165 CVE-2026-25168 CVE-2026-25169 CVE-2026-25171 CVE-2026-25172 CVE-2026-25173 CVE-2026-25174 CVE-2026-25175 CVE-2026-25176 CVE-2026-25177 CVE-2026-25178 CVE-2026-25179 CVE-2026-25180 CVE-2026-25181 CVE-2026-25185 CVE-2026-25186 CVE-2026-25187 CVE-2026-25188 CVE-2026-25189 CVE-2026-25190

CVE-2026-26xx (3 CVEs) ▼

CVE-2026-26111 CVE-2026-26128 CVE-2026-26132

February 2026 Security Update • 2026-02-10 • 10.0.19044.6937 •

Out of Support Patch Tuesday 24 CVEs 5 KEV Critical Risk

+28d ▼

28 days since previous release · Contains 5 actively exploited vulnerabilities

⚠️ Contains 5 actively exploited vulnerabilities

Recommendation: Update immediately — contains known-exploited vulnerabilities (CISA KEV)

KB Article

KB5075912

Build

10.0.19044.6937

Vulnerabilities

24

CISA KEV

5

Days to Prev.

28

Supersedes

KB5073724

CVEs (24)

CVE-2026-20xx (1 CVE) ▼

CVE-2026-20846

CVE-2026-21xx (23 CVEs) ▼

CVE-2026-21222 CVE-2026-21231 CVE-2026-21234 CVE-2026-21235 CVE-2026-21236 CVE-2026-21237 CVE-2026-21238 CVE-2026-21239 CVE-2026-21240 CVE-2026-21242 CVE-2026-21244 CVE-2026-21246 CVE-2026-21247 CVE-2026-21248 CVE-2026-21249 CVE-2026-21253 CVE-2026-21255 CVE-2026-21508 ⚑ CVE-2026-21510 ⚑ CVE-2026-21513 ⚑ CVE-2026-21519 ⚑ CVE-2026-21525 ⚑ CVE-2026-21533

January 2026 Security Update • 2026-01-13 • 10.0.19044.6809 •

Out of Support Patch Tuesday 72 CVEs 1 KEV Critical Risk

+35d ▼

35 days since previous release · Contains 1 actively exploited vulnerability

⚠️ Contains 1 actively exploited vulnerability

Recommendation: Update immediately — contains known-exploited vulnerabilities (CISA KEV)

KB Article

KB5073724

Build

10.0.19044.6809

Vulnerabilities

72

CISA KEV

1

Days to Prev.

35

Supersedes

KB5071546

CVEs (72)

CVE-2023-31xx (1 CVE) ▼

CVE-2023-31096

CVE-2024-55xx (1 CVE) ▼

CVE-2024-55414

CVE-2026-20xx (69 CVEs) ▼

CVE-2026-20804 ⚑ CVE-2026-20805 CVE-2026-20809 CVE-2026-20810 CVE-2026-20812 CVE-2026-20814 CVE-2026-20816 CVE-2026-20817 CVE-2026-20820 CVE-2026-20821 CVE-2026-20822 CVE-2026-20823 CVE-2026-20824 CVE-2026-20825 CVE-2026-20826 CVE-2026-20827 CVE-2026-20828 CVE-2026-20829 CVE-2026-20831 CVE-2026-20832 CVE-2026-20834 CVE-2026-20836 CVE-2026-20837 CVE-2026-20839 CVE-2026-20840 CVE-2026-20842 CVE-2026-20843 CVE-2026-20844 CVE-2026-20847 CVE-2026-20848 CVE-2026-20849 CVE-2026-20852 CVE-2026-20853 CVE-2026-20856 CVE-2026-20857 CVE-2026-20858 CVE-2026-20860 CVE-2026-20861 CVE-2026-20862 CVE-2026-20864 CVE-2026-20865 CVE-2026-20866 CVE-2026-20867 CVE-2026-20868 CVE-2026-20869 CVE-2026-20871 CVE-2026-20872 CVE-2026-20873 CVE-2026-20874 CVE-2026-20875 CVE-2026-20877 CVE-2026-20918 CVE-2026-20919 CVE-2026-20921 CVE-2026-20922 CVE-2026-20923 CVE-2026-20924 CVE-2026-20925 CVE-2026-20926 CVE-2026-20927 CVE-2026-20929 CVE-2026-20931 CVE-2026-20932 CVE-2026-20934 CVE-2026-20936 CVE-2026-20937 CVE-2026-20939 CVE-2026-20940 CVE-2026-20962

CVE-2026-21xx (1 CVE) ▼

CVE-2026-21265

December 2025 Security Update • 2025-12-09 • 10.0.19044.6691 •

Out of Support Patch Tuesday 31 CVEs 1 KEV Critical Risk

+28d ▼

28 days since previous release · Contains 1 actively exploited vulnerability

⚠️ Contains 1 actively exploited vulnerability

Recommendation: Update immediately — contains known-exploited vulnerabilities (CISA KEV)

KB Article

KB5071546

Build

10.0.19044.6691

Vulnerabilities

31

CISA KEV

1

Days to Prev.

28

Supersedes

KB5068781

CVEs (31)

CVE-2025-54xx (1 CVE) ▼

CVE-2025-54100

CVE-2025-55xx (1 CVE) ▼

CVE-2025-55233

CVE-2025-59xx (2 CVEs) ▼

CVE-2025-59516 CVE-2025-59517

CVE-2025-62xx (20 CVEs) ▼

⚑ CVE-2025-62221 CVE-2025-62454 CVE-2025-62455 CVE-2025-62457 CVE-2025-62458 CVE-2025-62461 CVE-2025-62462 CVE-2025-62463 CVE-2025-62464 CVE-2025-62466 CVE-2025-62467 CVE-2025-62470 CVE-2025-62472 CVE-2025-62473 CVE-2025-62474 CVE-2025-62549 CVE-2025-62565 CVE-2025-62567 CVE-2025-62571 CVE-2025-62573

CVE-2025-64xx (7 CVEs) ▼

CVE-2025-64658 CVE-2025-64661 CVE-2025-64670 CVE-2025-64673 CVE-2025-64678 CVE-2025-64679 CVE-2025-64680

November 2025 Security Update • 2025-11-11 • 10.0.19044.6575 •

Out of Support Patch Tuesday 34 CVEs 1 KEV Critical Risk

+28d ▼

28 days since previous release · Contains 1 actively exploited vulnerability

⚠️ Contains 1 actively exploited vulnerability

Recommendation: Update immediately — contains known-exploited vulnerabilities (CISA KEV)

KB Article

KB5068781

Build

10.0.19044.6575

Vulnerabilities

34

CISA KEV

1

Days to Prev.

28

Supersedes

KB5066791

CVEs (34)

CVE-2025-59xx (11 CVEs) ▼

CVE-2025-59505 CVE-2025-59506 CVE-2025-59507 CVE-2025-59508 CVE-2025-59509 CVE-2025-59510 CVE-2025-59511 CVE-2025-59512 CVE-2025-59513 CVE-2025-59514 CVE-2025-59515

CVE-2025-60xx (15 CVEs) ▼

CVE-2025-60703 CVE-2025-60704 CVE-2025-60705 CVE-2025-60706 CVE-2025-60707 CVE-2025-60708 CVE-2025-60709 CVE-2025-60714 CVE-2025-60715 CVE-2025-60716 CVE-2025-60717 CVE-2025-60719 CVE-2025-60720 CVE-2025-60723 CVE-2025-60724

CVE-2025-62xx (8 CVEs) ▼

CVE-2025-62208 CVE-2025-62209 CVE-2025-62213 ⚑ CVE-2025-62215 CVE-2025-62217 CVE-2025-62218 CVE-2025-62219 CVE-2025-62452

October 2025 Security Update • 2025-10-14 • 10.0.19044.6456 •

Out of Support Patch Tuesday 98 CVEs 3 KEV Critical Risk

+35d ▼

35 days since previous release · Contains 3 actively exploited vulnerabilities

⚠️ Contains 3 actively exploited vulnerabilities

Recommendation: Update immediately — contains known-exploited vulnerabilities (CISA KEV)

KB Article

KB5066791

Build

10.0.19044.6456

Vulnerabilities

98

CISA KEV

3

Days to Prev.

35

Supersedes

KB5065429

CVEs (98)

CVE-2016-95xx (1 CVE) ▼

CVE-2016-9535

CVE-2025-24xx (2 CVEs) ▼

CVE-2025-24052 ⚑ CVE-2025-24990

CVE-2025-25xx (1 CVE) ▼

CVE-2025-25004

CVE-2025-47xx (1 CVE) ▼

⚑ CVE-2025-47827

CVE-2025-48xx (1 CVE) ▼

CVE-2025-48813

CVE-2025-49xx (1 CVE) ▼

CVE-2025-49708

CVE-2025-50xx (2 CVEs) ▼

CVE-2025-50152 CVE-2025-50175

CVE-2025-53xx (3 CVEs) ▼

CVE-2025-53139 CVE-2025-53150 CVE-2025-53768

CVE-2025-54xx (1 CVE) ▼

CVE-2025-54957

CVE-2025-55xx (25 CVEs) ▼

CVE-2025-55248 CVE-2025-55325 CVE-2025-55326 CVE-2025-55328 CVE-2025-55331 CVE-2025-55332 CVE-2025-55333 CVE-2025-55335 CVE-2025-55336 CVE-2025-55338 CVE-2025-55340 CVE-2025-55678 CVE-2025-55679 CVE-2025-55680 CVE-2025-55681 CVE-2025-55685 CVE-2025-55686 CVE-2025-55687 CVE-2025-55689 CVE-2025-55692 CVE-2025-55695 CVE-2025-55696 CVE-2025-55699 CVE-2025-55700 CVE-2025-55701

CVE-2025-58xx (21 CVEs) ▼

CVE-2025-58714 CVE-2025-58715 CVE-2025-58716 CVE-2025-58717 CVE-2025-58718 CVE-2025-58719 CVE-2025-58720 CVE-2025-58722 CVE-2025-58725 CVE-2025-58726 CVE-2025-58727 CVE-2025-58728 CVE-2025-58729 CVE-2025-58730 CVE-2025-58732 CVE-2025-58733 CVE-2025-58734 CVE-2025-58735 CVE-2025-58736 CVE-2025-58738 CVE-2025-58739

CVE-2025-59xx (39 CVEs) ▼

CVE-2025-59185 CVE-2025-59187 CVE-2025-59190 CVE-2025-59191 CVE-2025-59192 CVE-2025-59193 CVE-2025-59195 CVE-2025-59196 CVE-2025-59197 CVE-2025-59198 CVE-2025-59199 CVE-2025-59200 CVE-2025-59201 CVE-2025-59202 CVE-2025-59203 CVE-2025-59204 CVE-2025-59205 CVE-2025-59207 CVE-2025-59208 CVE-2025-59209 CVE-2025-59211 CVE-2025-59214 ⚑ CVE-2025-59230 CVE-2025-59242 CVE-2025-59244 CVE-2025-59253 CVE-2025-59254 CVE-2025-59255 CVE-2025-59259 CVE-2025-59275 CVE-2025-59277 CVE-2025-59278 CVE-2025-59280 CVE-2025-59282 CVE-2025-59289 CVE-2025-59290 CVE-2025-59294 CVE-2025-59295 CVE-2025-59502

September 2025 Security Update • 2025-09-09 • 10.0.19044.6332 •

Out of Support Patch Tuesday 45 CVEs

+28d ▼

28 days since previous release · Addresses 45 security issues

ℹ️ Addresses 45 security issues

Recommendation: Update to stay secure — security fixes available

KB Article

KB5065429

Build

10.0.19044.6332

Vulnerabilities

45

Days to Prev.

28

Supersedes

KB5063709

CVEs (45)

CVE-2025-49xx (1 CVE) ▼

CVE-2025-49734

CVE-2025-53xx (9 CVEs) ▼

CVE-2025-53799 CVE-2025-53800 CVE-2025-53801 CVE-2025-53802 CVE-2025-53803 CVE-2025-53804 CVE-2025-53807 CVE-2025-53808 CVE-2025-53810

CVE-2025-54xx (28 CVEs) ▼

CVE-2025-54091 CVE-2025-54092 CVE-2025-54093 CVE-2025-54094 CVE-2025-54098 CVE-2025-54099 CVE-2025-54101 CVE-2025-54102 CVE-2025-54103 CVE-2025-54104 CVE-2025-54107 CVE-2025-54109 CVE-2025-54110 CVE-2025-54111 CVE-2025-54112 CVE-2025-54114 CVE-2025-54115 CVE-2025-54116 CVE-2025-54894 CVE-2025-54895 CVE-2025-54911 CVE-2025-54912 CVE-2025-54913 CVE-2025-54915 CVE-2025-54916 CVE-2025-54917 CVE-2025-54918 CVE-2025-54919

CVE-2025-55xx (6 CVEs) ▼

CVE-2025-55223 CVE-2025-55224 CVE-2025-55226 CVE-2025-55228 CVE-2025-55234 CVE-2025-55236

CVE-2025-59xx (1 CVE) ▼

CVE-2025-59220

August 2025 Security Update • 2025-08-12 • 10.0.19044.6216 •

Out of Support Patch Tuesday 48 CVEs

+35d ▼

35 days since previous release · Addresses 48 security issues

ℹ️ Addresses 48 security issues

Recommendation: Update to stay secure — security fixes available

KB Article

KB5063709

Build

10.0.19044.6216

Vulnerabilities

48

Days to Prev.

35

Supersedes

KB5062554

CVEs (48)

CVE-2025-48xx (1 CVE) ▼

CVE-2025-48807

CVE-2025-49xx (4 CVEs) ▼

CVE-2025-49743 CVE-2025-49751 CVE-2025-49761 CVE-2025-49762

CVE-2025-50xx (13 CVEs) ▼

CVE-2025-50153 CVE-2025-50154 CVE-2025-50155 CVE-2025-50158 CVE-2025-50159 CVE-2025-50161 CVE-2025-50166 CVE-2025-50167 CVE-2025-50170 CVE-2025-50171 CVE-2025-50172 CVE-2025-50173 CVE-2025-50177

CVE-2025-53xx (28 CVEs) ▼

CVE-2025-53131 CVE-2025-53132 CVE-2025-53134 CVE-2025-53135 CVE-2025-53136 CVE-2025-53137 CVE-2025-53140 CVE-2025-53141 CVE-2025-53143 CVE-2025-53144 CVE-2025-53145 CVE-2025-53147 CVE-2025-53149 CVE-2025-53151 CVE-2025-53152 CVE-2025-53154 CVE-2025-53155 CVE-2025-53716 CVE-2025-53718 CVE-2025-53721 CVE-2025-53722 CVE-2025-53723 CVE-2025-53724 CVE-2025-53725 CVE-2025-53726 CVE-2025-53766 CVE-2025-53778 CVE-2025-53789

CVE-2025-55xx (2 CVEs) ▼

CVE-2025-55229 CVE-2025-55230

July 2025 Security Update • 2025-07-08 • 10.0.19044.6093 •

Out of Support Patch Tuesday 74 CVEs

+28d ▼

28 days since previous release · Addresses 74 security issues

ℹ️ Addresses 74 security issues

Recommendation: Update to stay secure — security fixes available

KB Article

KB5062554

Build

10.0.19044.6093

Vulnerabilities

74

Days to Prev.

28

Supersedes

KB5060533

CVEs (74)

CVE-2024-36xx (2 CVEs) ▼

CVE-2024-36350 CVE-2024-36357

CVE-2025-47xx (16 CVEs) ▼

CVE-2025-47159 CVE-2025-47971 CVE-2025-47972 CVE-2025-47973 CVE-2025-47975 CVE-2025-47976 CVE-2025-47980 CVE-2025-47981 CVE-2025-47982 CVE-2025-47984 CVE-2025-47985 CVE-2025-47986 CVE-2025-47987 CVE-2025-47991 CVE-2025-47996 CVE-2025-47999

CVE-2025-48xx (21 CVEs) ▼

CVE-2025-48000 CVE-2025-48001 CVE-2025-48003 CVE-2025-48799 CVE-2025-48800 CVE-2025-48803 CVE-2025-48804 CVE-2025-48805 CVE-2025-48806 CVE-2025-48808 CVE-2025-48811 CVE-2025-48814 CVE-2025-48815 CVE-2025-48816 CVE-2025-48817 CVE-2025-48818 CVE-2025-48819 CVE-2025-48820 CVE-2025-48821 CVE-2025-48822 CVE-2025-48823

CVE-2025-49xx (34 CVEs) ▼

CVE-2025-49658 CVE-2025-49659 CVE-2025-49660 CVE-2025-49661 CVE-2025-49664 CVE-2025-49665 CVE-2025-49667 CVE-2025-49675 CVE-2025-49678 CVE-2025-49679 CVE-2025-49680 CVE-2025-49682 CVE-2025-49683 CVE-2025-49684 CVE-2025-49685 CVE-2025-49686 CVE-2025-49687 CVE-2025-49689 CVE-2025-49690 CVE-2025-49691 CVE-2025-49721 CVE-2025-49722 CVE-2025-49723 CVE-2025-49724 CVE-2025-49725 CVE-2025-49726 CVE-2025-49727 CVE-2025-49730 CVE-2025-49732 CVE-2025-49733 CVE-2025-49740 CVE-2025-49742 CVE-2025-49744 CVE-2025-49760

CVE-2025-69xx (1 CVE) ▼

CVE-2025-6965

June 2025 Security Update • 2025-06-10 • 10.0.19044.5965 •

Out of Support Patch Tuesday 35 CVEs 2 KEV Critical Risk

+28d ▼

28 days since previous release · Contains 2 actively exploited vulnerabilities

⚠️ Contains 2 actively exploited vulnerabilities

Recommendation: Update immediately — contains known-exploited vulnerabilities (CISA KEV)

KB Article

KB5060533

Build

10.0.19044.5965

Vulnerabilities

35

CISA KEV

2

Days to Prev.

28

Supersedes

KB5058379

CVEs (35)

CVE-2025-24xx (3 CVEs) ▼

CVE-2025-24065 CVE-2025-24068 CVE-2025-24069

CVE-2025-30xx (1 CVE) ▼

CVE-2025-3052

CVE-2025-32xx (11 CVEs) ▼

CVE-2025-32712 CVE-2025-32713 CVE-2025-32714 CVE-2025-32715 CVE-2025-32716 CVE-2025-32718 CVE-2025-32719 CVE-2025-32720 CVE-2025-32721 CVE-2025-32722 CVE-2025-32724

CVE-2025-33xx (18 CVEs) ▼

CVE-2025-33052 ⚑ CVE-2025-33053 CVE-2025-33055 CVE-2025-33056 CVE-2025-33057 CVE-2025-33058 CVE-2025-33059 CVE-2025-33060 CVE-2025-33061 CVE-2025-33062 CVE-2025-33063 CVE-2025-33064 CVE-2025-33065 CVE-2025-33066 CVE-2025-33067 CVE-2025-33070 ⚑ CVE-2025-33073 CVE-2025-33075

CVE-2025-47xx (2 CVEs) ▼

CVE-2025-47160 CVE-2025-47955

May 2025 Security Update • 2025-05-13 • 10.0.19044.5854 •

Out of Support Patch Tuesday 34 CVEs 5 KEV Critical Risk

+35d ▼

35 days since previous release · Contains 5 actively exploited vulnerabilities

⚠️ Contains 5 actively exploited vulnerabilities

Recommendation: Update immediately — contains known-exploited vulnerabilities (CISA KEV)

KB Article

KB5058379

Build

10.0.19044.5854

Vulnerabilities

34

CISA KEV

5

Days to Prev.

35

Supersedes

KB5055518

CVEs (34)

CVE-2025-24xx (1 CVE) ▼

CVE-2025-24063

CVE-2025-27xx (1 CVE) ▼

CVE-2025-27468

CVE-2025-29xx (25 CVEs) ▼

CVE-2025-29829 CVE-2025-29830 CVE-2025-29832 CVE-2025-29833 CVE-2025-29835 CVE-2025-29836 CVE-2025-29837 CVE-2025-29839 CVE-2025-29840 CVE-2025-29841 CVE-2025-29842 CVE-2025-29954 CVE-2025-29956 CVE-2025-29957 CVE-2025-29958 CVE-2025-29959 CVE-2025-29960 CVE-2025-29961 CVE-2025-29962 CVE-2025-29963 CVE-2025-29964 CVE-2025-29966 CVE-2025-29967 CVE-2025-29969 CVE-2025-29974

CVE-2025-30xx (4 CVEs) ▼

CVE-2025-30385 CVE-2025-30388 ⚑ CVE-2025-30397 ⚑ CVE-2025-30400

CVE-2025-32xx (3 CVEs) ▼

⚑ CVE-2025-32701 ⚑ CVE-2025-32706 ⚑ CVE-2025-32709

April 2025 Security Update • 2025-04-08 • 10.0.19044.5737 •

Out of Support Patch Tuesday 59 CVEs 1 KEV Critical Risk

▼

Contains 1 actively exploited vulnerability

⚠️ Contains 1 actively exploited vulnerability

Recommendation: Update immediately — contains known-exploited vulnerabilities (CISA KEV)

KB Article

KB5055518

Build

10.0.19044.5737

Vulnerabilities

59

CISA KEV

1

Supersedes

KB5053606

CVEs (59)

CVE-2025-21xx (6 CVEs) ▼

CVE-2025-21191 CVE-2025-21197 CVE-2025-21204 CVE-2025-21205 CVE-2025-21221 CVE-2025-21222

CVE-2025-24xx (5 CVEs) ▼

CVE-2025-24058 CVE-2025-24060 CVE-2025-24062 CVE-2025-24073 CVE-2025-24074

CVE-2025-26xx (23 CVEs) ▼

CVE-2025-26635 CVE-2025-26637 CVE-2025-26639 CVE-2025-26640 CVE-2025-26641 CVE-2025-26644 CVE-2025-26648 CVE-2025-26663 CVE-2025-26665 CVE-2025-26666 CVE-2025-26668 CVE-2025-26669 CVE-2025-26670 CVE-2025-26672 CVE-2025-26673 CVE-2025-26674 CVE-2025-26675 CVE-2025-26678 CVE-2025-26679 CVE-2025-26681 CVE-2025-26686 CVE-2025-26687 CVE-2025-26688

CVE-2025-27xx (22 CVEs) ▼

CVE-2025-27469 CVE-2025-27471 CVE-2025-27473 CVE-2025-27476 CVE-2025-27477 CVE-2025-27478 CVE-2025-27481 CVE-2025-27484 CVE-2025-27487 CVE-2025-27490 CVE-2025-27491 CVE-2025-27727 CVE-2025-27729 CVE-2025-27730 CVE-2025-27731 CVE-2025-27732 CVE-2025-27735 CVE-2025-27736 CVE-2025-27737 CVE-2025-27738 CVE-2025-27739 CVE-2025-27742

CVE-2025-29xx (3 CVEs) ▼

CVE-2025-29809 CVE-2025-29810 ⚑ CVE-2025-29824

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