Microsoft has issued out of the band patch for Windows 8.1 and Windows Server 2012 R2. The update resolves the Remote Access Elevation of Privilege vulnerability, and should be installed on all devices.
Here are some details about the vulnerability.
An elevation of privilege vulnerability exists when the Windows Remote Access improperly handles file operations. An attacker who successfully exploited this vulnerability could gain elevated privileges.
To exploit the vulnerability, an attacker would first need code execution on a victim system. An attacker could then run a specially crafted application.
Besides the above file operation issue, Windows Remote Access has a memory operation issue.
An elevation of privilege vulnerability exists when Windows Remote Access improperly handles memory.
To exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges.
The patch KB4578013 resolves both issues. To get the standalone package for this update, go to the Microsoft Update Catalog website.
Thanks to Deskmodder.