Cato CTRL Threat Brief: CVE-2024-38077 - Windows Remote Desktop Licensing Service RCE Vulnerability ("MadLicense")
Recently, CrowSec security researchers published a proof of concept (PoC) for a critical remote code execution (RCE) vulnerability in Windows Server (CVSS score 9.8), ranging all the way from Windows Server 2000 up to 2025. The vulnerable component is the Remote Desktop Licensing service, often deployed and enabled on Windows Servers using Remote Desktop Services. The exploit is a 0-click pre-auth exploitation, meaning no user interaction or authentication details are necessary.