https://arstechnica.com/information-technology/2020/01/another-reason-to-hurry-with-windows-server-patches-a-new-rdp-vulnerability/

While much of the attention around Microsoft's latest Windows security patch has been focused on a flaw in Windows 10 and Windows Server that could be used to spoof a certificate for secure Web sessions or signing code, there were 48 other vulnerabilities that were fixed in the latest update package. Five were related to Microsoft's Remote Desktop Protocol (RDP)-based service, which is used by thousands of organizations for remote access to computers within their networks. And two of them are flaws in the Windows Remote Desktop Gateway that could allow attackers to gain access to networks without having to provide a login.

These two separate bugs, identified as CVE-2020-0609 and CVE-2020-0610, are rated as more dangerous than the crypto bug by Microsoft because, while they're not yet exploited, they could be used to remotely execute code on targeted RDP servers before the gateway even attempts to authenticate them.