CVE-2020-16939

Se presenta una vulnerabilidad de escalada de privilegios cuando Group Policy comprueba inapropiadamente el acceso también se conoce como "Group Policy Elevation of Privilege Vulnerability"

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Group Policy Client service. By creating a junction, an attacker can abuse the service to gain control of files and folders. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of an administrator.