A new scanning tool is available for checking if your computer is vulnerable to the BlueKeep security issue in Windows Remote Desktop Services. Microsoft rolled out a patch in mid-May but tens of thousands of systems exposed to the public internet are still at risk. In the U.S. alone, there are at least 45,000 systems with RDP exposed on the web at the time of writing. More than 20,000 hosts vulnerable to BlueKeep are in South Korea, and over 16,000 in Brazil.
Source: https://www.bleepingcomputer.com/news/security/new-bluekeep-scanner-lets-you-find-vulnerable-windows-pcs/