VMware is a popular corporate virtual server facility & recent security updates are now available for pilot testing & installation.

VMware Releases Multiple Security Updates | CISA

VMSA-2021-0002 (vmware.com)

VMware has released security updates to address multiple vulnerabilities—CVE-2021-21972, CVE-2021-21973, CVE-2021-21974—in ESXi, vCenter Server, and Cloud Foundation. A remote attacker could exploit some of these vulnerabilities to take control of an affected system.  CISA encourages users and administrators to review VMware Security Advisory VMSA-2021-0002 and apply the necessary updates.