Patch tracker / Products / Windows Server, version 2004

Windows Server, version 2004: vulnerabilities and security updates

Every CVE affecting Windows Server, version 2004 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
148
Updates (KBs)
1
Actively exploited (KEV)
0
Critical Severity
5

CVEs affecting Windows Server, version 2004

CVESeverityCVSSEPSSStatus
CVE-2026-49160High7.557%-
CVE-2026-47291Critical9.825%-
CVE-2026-44815Critical9.81.1%-
CVE-2026-50508Medium6.512%-
CVE-2026-42904Critical9.60.4%-
CVE-2026-42980High7.86.9%-
CVE-2025-10263Critical9.30.5%-
CVE-2026-45602Critical9.10.4%-
CVE-2026-42985High8.81.3%-
CVE-2026-47289High8.81.0%-
CVE-2026-47653High8.80.6%-
CVE-2026-34329High8.80.5%-
CVE-2026-40403High8.80.4%-
CVE-2026-45586High7.83.6%-
CVE-2026-40398High7.82.7%-
CVE-2026-45607High8.40.4%-
CVE-2026-45641High8.40.3%-
CVE-2026-42989High7.82.3%-
CVE-2026-33835High7.82.1%-
CVE-2026-42905High7.82.0%-
CVE-2026-42986High7.82.0%-
CVE-2026-40415High8.10.8%-
CVE-2026-33837High7.81.8%-
CVE-2026-45635High8.10.6%-
CVE-2026-45599High8.10.5%-
CVE-2026-48573High7.91.0%-
CVE-2026-48576High7.91.0%-
CVE-2026-50507Medium6.85.0%-
CVE-2026-45588High7.90.3%-
CVE-2026-47656High7.90.3%-
CVE-2026-48568High7.90.3%-
CVE-2026-48570High7.90.3%-
CVE-2026-48575High7.90.3%-
CVE-2026-48578High7.90.3%-
CVE-2026-35421High7.80.5%-
CVE-2026-44803High7.80.5%-
CVE-2026-44812High7.80.5%-
CVE-2026-48574High7.80.4%-
CVE-2026-45636High7.80.4%-
CVE-2026-33838High7.80.4%-
CVE-2026-45658High7.80.4%-
CVE-2026-35417High7.80.3%-
CVE-2026-40404High7.80.3%-
CVE-2026-35415High7.80.3%-
CVE-2026-40399High7.80.3%-
CVE-2026-42828High7.80.3%-
CVE-2026-42837High7.80.3%-
CVE-2026-42916High7.80.3%-
CVE-2026-34343High7.80.3%-
CVE-2026-45656High7.80.3%-
CVE-2026-41088High7.80.3%-
CVE-2026-34344High7.80.3%-
CVE-2026-33828High7.80.3%-
CVE-2026-33841High7.80.3%-
CVE-2026-34330High7.80.3%-
CVE-2026-40377High7.80.3%-
CVE-2026-40407High7.80.3%-
CVE-2026-41092High7.80.3%-
CVE-2026-40409High7.80.3%-
CVE-2026-34333High7.80.3%-
CVE-2026-40408High7.80.3%-
CVE-2026-42983High7.80.3%-
CVE-2026-45592High7.80.3%-
CVE-2026-45593High7.80.3%-
CVE-2026-45605High7.80.3%-
CVE-2026-45637High7.80.3%-
CVE-2026-45638High7.80.3%-
CVE-2026-40397High7.80.3%-
CVE-2026-33834High7.80.3%-
CVE-2026-44802High7.80.3%-
CVE-2026-48583High7.80.3%-
CVE-2026-34338High7.80.2%-
CVE-2026-40382High7.80.2%-
CVE-2026-42978High7.80.2%-
CVE-2026-34336High7.80.2%-
CVE-2026-34351High7.80.2%-
CVE-2026-35418High7.80.2%-
CVE-2026-42977High7.80.2%-
CVE-2026-42979High7.80.2%-
CVE-2026-45487High7.80.2%-
CVE-2026-42991High7.80.2%-
CVE-2026-34337High7.80.2%-
CVE-2026-34334High7.80.2%-
CVE-2026-8863High7.80.1%-
CVE-2026-35424High7.51.2%-
CVE-2026-40406High7.50.9%-
CVE-2026-42908High7.50.9%-
CVE-2026-45639High7.50.9%-
CVE-2026-48563High7.50.5%-
CVE-2026-42992High7.50.5%-
CVE-2026-44799High7.50.5%-
CVE-2026-44801High7.50.5%-
CVE-2026-42993High7.50.4%-
CVE-2026-42909High7.50.4%-
CVE-2026-32161High7.50.3%-
CVE-2026-40414High7.40.5%-
CVE-2026-40413High7.40.4%-
CVE-2026-35416High7.01.6%-
CVE-2026-40401High7.10.3%-
CVE-2026-41097Medium6.71.4%-
CVE-2026-34342High7.00.3%-
CVE-2026-41108High7.00.3%-
CVE-2026-34347High7.00.3%-
CVE-2026-42984High7.00.3%-
CVE-2026-45653High7.00.3%-
CVE-2026-40410High7.00.2%-
CVE-2026-34335High7.00.2%-
CVE-2026-42911High7.00.2%-
CVE-2026-45640High7.00.2%-
CVE-2026-42825High7.00.2%-
CVE-2026-47648High7.00.2%-
CVE-2026-34340High7.00.2%-
CVE-2026-42912High7.00.2%-
CVE-2026-34345High7.00.2%-
CVE-2026-34341High7.00.2%-
CVE-2026-42836High7.00.2%-
CVE-2026-33839High7.00.2%-
CVE-2026-34331High7.00.2%-
CVE-2026-45596High7.00.2%-
CVE-2026-45598High7.00.2%-
CVE-2026-45601High7.00.2%-
CVE-2026-45603High7.00.2%-
CVE-2026-45608Medium6.80.3%-
CVE-2026-21530Medium6.70.3%-
CVE-2026-32170Medium6.70.3%-
CVE-2026-42903Medium6.50.9%-
CVE-2026-42907Medium6.50.8%-
CVE-2026-35422Medium6.50.6%-
CVE-2026-40380Medium6.20.5%-
CVE-2026-42971Medium5.50.5%-
CVE-2026-42972Medium5.50.5%-
CVE-2026-42970Medium5.50.4%-
CVE-2026-42973Medium5.50.4%-
CVE-2026-42906Medium5.50.4%-
CVE-2026-45594Medium5.50.4%-
CVE-2026-42969Medium5.50.4%-
CVE-2026-42968Medium5.50.4%-
CVE-2026-42915Medium5.50.4%-
CVE-2026-45606Medium5.50.4%-
CVE-2026-35423Medium5.40.7%-
CVE-2026-45634Medium5.50.4%-
CVE-2026-34339Medium5.50.3%-
CVE-2026-45595Medium5.40.4%-
CVE-2026-42914Medium5.30.8%-
CVE-2026-45655Medium5.30.4%-
CVE-2026-32209Medium4.40.2%-
CVE-2026-45642Low3.90.3%-
CVE-2025-54518High-0.3%-

Updates (KBs) for Windows Server, version 2004

UpdateReleasedSeverityCVSSEPSSCVEsStatus
KB50941272026-06-09Critical9.857%148-

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

KB5126651: the full CVE list KB5122876: patch details KB5126655: patch details KB5126657 install notes and severity KB5126052 download and what it fixes KB5126646 download and what it fixes KB5122882: patch details KB5129238 install notes and severity KB5126868: the full CVE list KB5129235: the full CVE list
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.
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