vmms.exe

The vmms.exe process is the Virtual Machine Management Service for Microsoft Hyper-V, responsible for managing virtual machine states, configuration, and host-guest communication. Recent discussions on WindowsForum.com focus on critical security vulnerabilities in Hyper-V that involve vmms.exe, specifically CVE-2025-54098 and CVE-2025-50167. These flaws allow local privilege escalation through improper access control and race conditions, respectively. Administrators and users running Hyper-V hosts, management servers, or developer workstations with virtualization enabled are urged to apply Microsoft's security patches immediately. The tag covers patching guidance, vulnerability details, and best practices for securing Hyper-V environments against kernel-level exploits targeting vmms.exe.