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#Windows Server 2025

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Browse articles tagged Windows Server 2025.

Microsoft KB5087539 security update graphic for Windows Server 2025, featuring a server tower, security shield.

Microsoft Ships KB5087539 Security Update for Windows Server 2025

Microsoft released KB5087539 on May 12, 2026, a security update for Windows Server 2025 that patches remote code execution, privilege escalation and information disclosure flaws across the kernel, Active Directory Domain Services and Remote Desktop Services. The update raises the OS build to 26100.32860 and applies to Standard and Datacenter editions in both Desktop Experience and Server Core.

Microsoft KB5082417 .NET Framework security update fixing a CLR privilege escalation flaw, illustrated with code.

Microsoft Ships KB5082417 .NET Framework Update Fixing CLR Privilege Escalation Flaw

Microsoft released KB5082417, a cumulative security and reliability update for .NET Framework 3.5 and 4.8.1 on Windows 11 25H2 and Windows Server 2025. It patches a critical CLR elevation-of-privilege vulnerability (CVE-2026-0847) and resolves ASP.NET memory corruption, WCF reliability, Entity Framework performance and XML serialization issues.