Windows DNS Server Remote Code Execution Vulnerability

According to the CVSS metric, privileges required is high (PR:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires the attacker or targeted user to have specific elevated privileges. As is best practice, regular validation and audits of administrative groups should be conducted.

How could an attacker exploit this vulnerability?
In a network-based attack an attacker would need to have the privileges to query the Domain Name Service (DNS). If the timing of DNS queries is perfect, the attacker could execute code remotely on the target server.

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to take additional actions prior to exploitation to prepare the target environment.

Security updates
10.0.17763.2803 — https://support.microsoft.com/help/5012647
10.0.20348.643 — https://support.microsoft.com/help/5012604
10.0.19042.1645 — https://support.microsoft.com/help/5012599
10.0.14393.5066 — https://support.microsoft.com/help/5012596
6.3.9600.20337 — https://support.microsoft.com/help/5012670
6.3.9600.20337 — https://support.microsoft.com/help/5012639