Microsoft Server Windows Server Vulnerabilities & Security Advisories
418 advisories tracked · Microsoft Security Update Guide (MSRC) · 5 listed in the CISA Known Exploited Vulnerabilities catalog
Every row below is a published Microsoft Server advisory that VulniPulse classified as Windows Server, with the CVEs, affected and fixed releases and exploitation status the vendor stated. Severity mix: 17 critical, 295 high, 122 medium, 3 low.
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Source
Microsoft Security Update Guide (MSRC)
Polled via the official MSRC Security Update Guide RSS feed (api.msrc.microsoft.com, no credentials required), scoped to SERVER products only — Windows Server, Exchange, SQL Server, SharePoint, Hyper-V and companion server roles. Client-only CVEs (Edge, Office apps, consumer Windows) are filtered out via the monthly CVRF document's affected-product list.
Latest MS Server Windows Server advisories
High [CVE-2026-50480] Windows Web Proxy Auto-Discovery Protocol (WPAD) Elevation of Privilege Vulnerability
Windows Web Proxy Auto-Discovery Protocol (WPAD) Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2016; Windows Server 2012; Windows Server 2012 R2.
High [CVE-2026-50493] DirectX Graphics Kernel Elevation of Privilege Vulnerability
DirectX Graphics Kernel Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025.
High [CVE-2026-50502] Windows Event Logging Service Remote Code Execution Vulnerability
Windows Event Logging Service Remote Code Execution Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-50487] Windows DNS Client Elevation of Privilege Vulnerability
Windows DNS Client Elevation of Privilege Vulnerability Affected product named by the advisory: Windows Server 2025.
High [CVE-2026-50488] Clipboard User Service Elevation of Privilege Vulnerability
Clipboard User Service Elevation of Privilege Vulnerability Affected product named by the advisory: Windows Server 2025.
High [CVE-2026-50500] Windows Netlogon Elevation of Privilege Vulnerability
Windows Netlogon Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-50499] Windows Print Spooler Elevation of Privilege Vulnerability
Windows Print Spooler Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025.
High [CVE-2026-50490] Windows Installer Elevation of Privilege Vulnerability
Windows Installer Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-50491] Code Integrity DLL (ci.dll) Elevation of Privilege Vulnerability
Code Integrity DLL (ci.dll) Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-50501] Windows Resilient File System (ReFS) Remote Code Execution Vulnerability
Windows Resilient File System (ReFS) Remote Code Execution Vulnerability Affected product named by the advisory: Windows Server 2025.
High [CVE-2026-50509] Wireless Wide Area Network Service (WwanSvc) Elevation of Privilege Vulnerability
Wireless Wide Area Network Service (WwanSvc) Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2025; Windows Server 2016.
High [CVE-2026-50527] .NET Framework Denial of Service Vulnerability
.NET Framework Denial of Service Vulnerability Affected products named by the advisory: Microsoft.NET Framework 4.8 on Windows Server 2016; Microsoft.NET Framework 4.8 on Windows Server 2012; Microsoft.NET Framework 4.8 on Windows Server 2012 R2; Microsoft.NET Framework 3.5 AND 4.8 on Windows Server 2019; and 4 more. Affected products named by the advisory: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022; Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019; Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016; Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012.
High [CVE-2026-50646] .NET Framework Remote Code Execution Vulnerability
.NET Framework Remote Code Execution Vulnerability Affected products named by the advisory: Microsoft.NET Framework 4.8 on Windows Server 2012; Microsoft.NET Framework 4.8 on Windows Server 2016; Microsoft.NET Framework 3.5 AND 4.7.2 on Windows Server 2016; Microsoft.NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2; and 4 more. Affected products named by the advisory: Microsoft .NET Framework 4.8 on Windows Server 2012 R2; Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019; Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022.
High [CVE-2026-50647] Active Directory Federation Server Denial of Service Vulnerability
Active Directory Federation Server Denial of Service Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 4 more. Affected products named by the advisory: Windows Server 2012 R2; Microsoft.NET Framework 4.8 on Windows Server 2016; Microsoft.NET Framework 4.8 on Windows Server 2012.
High [CVE-2026-50650] .NET Framework Elevation of Privilege Vulnerability
.NET Framework Elevation of Privilege Vulnerability Affected products named by the advisory: Microsoft.NET Framework 4.8 on Windows Server 2012; Microsoft.NET Framework 4.8 on Windows Server 2012 R2; Microsoft.NET Framework 4.8 on Windows Server 2016; Microsoft.NET Framework 3.5 AND 4.8 on Windows Server 2019; and 4 more. Affected products named by the advisory: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022; Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019; Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016; Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012.
High [CVE-2026-50666] Windows Remote Access Elevation of Privilege Vulnerability
Windows Remote Access Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 1 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-50669] Windows Telephony Server Elevation of Privilege Vulnerability
Windows Telephony Server Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-50672] Windows NTFS Elevation of Privilege Vulnerability
Windows NTFS Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025.
High [CVE-2026-54115] Windows Message Queuing (MSMQ) Elevation of Privilege Vulnerability
Windows Message Queuing (MSMQ) Elevation of Privilege Vulnerability Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more. Affected products named by the advisory: Windows Server 2012 R2.
High [CVE-2026-50679] Windows Search Service Elevation of Privilege Vulnerability
Windows Search Service Elevation of Privilege Vulnerability Affected product named by the advisory: Windows Server 2025.