Microsoft: Windows dnsrslvr.dll Elevation of Privilege Vulnerability
An elevation of privilege vulnerability exists in the way that the dnsrslvr.dll handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. To exploit the vulnerability, a locally authenticated attacker could run a specially crafted application. The security update addresses the vulnerability by ensuring the dnsrslvr.dll properly handles objects in memory.
Windows Server version 2004 (Server Core installation)
Windows Server 2016
Windows Server version 1909 (Server Core installation)
Windows Server version 1903 (Server Core installation)
Windows Server 2019