
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.



