A remote code execution vulnerability exists in Remote Desktop Services – formerly known as Terminal Services – when an unauthenticated attacker connects to the target system using RDP and sends specially crafted requests. This vulnerability is pre- authentication and requires no user interaction. An attacker who successfully exploited this vulnerability could execute arbitrary code on the target system.
To exploit this vulnerability, an attacker would need to send a specially crafted request to the target systems Remote Desktop Service via RDP.
See details on Microsoft's advisories:
Update A, 07.10.2019
Miele XGW 3000 is a ZigBee-TCP/IP gateway. The gateway connects Miele ZigBee-Appliances (called Miele@home) with local customer TCP/IP-Network and allows visualizing the appliance state on the web interface of the gateway, Miele SuperVision capable appliance, smartphone/tablet app or home automatization device.
An external security researcher reported two vulnerabilities in XGW 3000 gateway and provided a Proof-of-Concept. The combined exploitation of both vulnerabilities allow the circumvention of the authentication mechanisms of the XGW3000.
The Miele PSIRT managed to reproduce the findings and successfully exploited the gateway. Therefore, the existence of all vulnerabilities has been confirmed.