Windows Server 2012

This version of Windows is no longer supported

Microsoft no longer issues security updates for Windows Server 2012. Devices running this version are exposed to unpatched vulnerabilities.

End of Life

Latest Release

KB Article KB5087067

Build 4.8.9334.0 and 4.8.4802.0

Released 2026-05-12

Age 8 days ago

CVEs Fixed 44

Exploited 0

Release Type Patch Tuesday

End of Support 2023-10-10

KB Article MSRC

Resources

Windows Server 2012

Security Intelligence

Security Information

May 2026 Security Update • 2026-05-12 • 4.8.9334.0 and 4.8.4802.0 •

Out of Support Patch Tuesday 44 CVEs

+28d ▼

28 days since previous release · Addresses 44 security issues

ℹ️ Addresses 44 security issues

Recommendation: Update to stay secure — security fixes available

KB Article

KB5087067

Build

4.8.9334.0 and 4.8.4802.0

Vulnerabilities

Days to Prev.

CVEs (44)

CVE-2026-21xx (1 CVE) ▼

CVE-2026-21530

CVE-2026-32xx (4 CVEs) ▼

CVE-2026-32161 CVE-2026-32170 CVE-2026-32177 CVE-2026-32209

CVE-2026-33xx (3 CVEs) ▼

CVE-2026-33834 CVE-2026-33837 CVE-2026-33838

CVE-2026-34xx (12 CVEs) ▼

CVE-2026-34329 CVE-2026-34330 CVE-2026-34331 CVE-2026-34333 CVE-2026-34334 CVE-2026-34338 CVE-2026-34341 CVE-2026-34342 CVE-2026-34343 CVE-2026-34344 CVE-2026-34347 CVE-2026-34351

CVE-2026-35xx (8 CVEs) ▼

CVE-2026-35415 CVE-2026-35416 CVE-2026-35420 CVE-2026-35421 CVE-2026-35422 CVE-2026-35423 CVE-2026-35424 CVE-2026-35433

CVE-2026-40xx (13 CVEs) ▼

CVE-2026-40377 CVE-2026-40380 CVE-2026-40382 CVE-2026-40397 CVE-2026-40398 CVE-2026-40401 CVE-2026-40403 CVE-2026-40406 CVE-2026-40407 CVE-2026-40408 CVE-2026-40410 CVE-2026-40413 CVE-2026-40414

CVE-2026-41xx (2 CVEs) ▼

CVE-2026-41089 CVE-2026-41095

CVE-2026-42xx (1 CVE) ▼

CVE-2026-42825

April 2026 Security Update • 2026-04-14 • 4.8.4801.0 •

Out of Support Patch Tuesday 63 CVEs 1 KEV Critical Risk

+126d ▼

126 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

KB5082403

Build

4.8.4801.0

Vulnerabilities

CISA KEV

Days to Prev.

126

CVEs (63)

CVE-2026-23xx (1 CVE) ▼

CVE-2026-23666

CVE-2026-25xx (1 CVE) ▼

CVE-2026-25250

CVE-2026-26xx (15 CVEs) ▼

CVE-2026-26151 CVE-2026-26152 CVE-2026-26154 CVE-2026-26159 CVE-2026-26160 CVE-2026-26162 CVE-2026-26163 CVE-2026-26168 CVE-2026-26173 CVE-2026-26174 CVE-2026-26176 CVE-2026-26177 CVE-2026-26180 CVE-2026-26182 CVE-2026-26183

CVE-2026-27xx (17 CVEs) ▼

CVE-2026-27908 CVE-2026-27909 CVE-2026-27910 CVE-2026-27912 CVE-2026-27913 CVE-2026-27914 CVE-2026-27915 CVE-2026-27916 CVE-2026-27917 CVE-2026-27919 CVE-2026-27920 CVE-2026-27921 CVE-2026-27922 CVE-2026-27923 CVE-2026-27925 CVE-2026-27929 CVE-2026-27930

CVE-2026-32xx (22 CVEs) ▼

CVE-2026-32068 CVE-2026-32070 CVE-2026-32073 CVE-2026-32075 CVE-2026-32077 CVE-2026-32082 CVE-2026-32083 CVE-2026-32084 CVE-2026-32086 CVE-2026-32087 CVE-2026-32093 CVE-2026-32150 CVE-2026-32151 CVE-2026-32156 CVE-2026-32157 CVE-2026-32183 ⚑ CVE-2026-32202 CVE-2026-32212 CVE-2026-32214 CVE-2026-32217 CVE-2026-32225 CVE-2026-32226

CVE-2026-33xx (7 CVEs) ▼

CVE-2026-33099 CVE-2026-33100 CVE-2026-33104 CVE-2026-33116 CVE-2026-33826 CVE-2026-33827 CVE-2026-33829

December 2025 Security Update • 2025-12-09 •

Out of Support Patch Tuesday 12 CVEs

+56d ▼

56 days since previous release · Addresses 12 security issues

ℹ️ Addresses 12 security issues

Recommendation: Update to stay secure — security fixes available

KB Article

KB5071503

Vulnerabilities

Days to Prev.

CVEs (12)

CVE-2025-54xx (1 CVE) ▼

CVE-2025-54100

CVE-2025-62xx (10 CVEs) ▼

CVE-2025-62455 CVE-2025-62458 CVE-2025-62466 CVE-2025-62470 CVE-2025-62472 CVE-2025-62473 CVE-2025-62474 CVE-2025-62549 CVE-2025-62567 CVE-2025-62571

CVE-2025-64xx (1 CVE) ▼

CVE-2025-64678

October 2025 Security Update • 2025-10-14 • 6.2.9200.25728 •

Out of Support Patch Tuesday 52 CVEs 4 KEV Critical Risk

▼

Contains 4 actively exploited vulnerabilities

⚠️ Contains 4 actively exploited vulnerabilities

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

KB Article

KB5070887

Build

6.2.9200.25728

Vulnerabilities

CISA KEV

CVEs (52)

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-2025-55xx (8 CVEs) ▼

CVE-2025-55248 CVE-2025-55335 CVE-2025-55678 CVE-2025-55687 CVE-2025-55692 CVE-2025-55695 CVE-2025-55700 CVE-2025-55701

CVE-2025-58xx (13 CVEs) ▼

CVE-2025-58714 CVE-2025-58717 CVE-2025-58718 CVE-2025-58725 CVE-2025-58726 CVE-2025-58729 CVE-2025-58730 CVE-2025-58732 CVE-2025-58733 CVE-2025-58735 CVE-2025-58736 CVE-2025-58737 CVE-2025-58739

CVE-2025-59xx (26 CVEs) ▼

CVE-2025-59185 CVE-2025-59187 CVE-2025-59188 CVE-2025-59190 CVE-2025-59196 CVE-2025-59198 CVE-2025-59201 CVE-2025-59202 CVE-2025-59205 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-2025-59258 CVE-2025-59259 CVE-2025-59275 CVE-2025-59277 CVE-2025-59278 CVE-2025-59280 CVE-2025-59282 ⚑ CVE-2025-59287 CVE-2025-59295