Windows Group Policy Elevation of Privilege Vulnerability

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 win a race condition.

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 to have privileges to create Group Policy Templates. As is best practice, regular validation and audits of administrative groups should be conducted.

What privileges could be gained by an attacker who successfully exploited the vulnerability?
An attacker who successfully exploited this vulnerability could gain domain administrator privileges.

Security updates
10.0.17763.3165 — https://support.microsoft.com/help/5015811
10.0.19043.1826 — https://support.microsoft.com/help/5015807
10.0.20348.825 — https://support.microsoft.com/help/5015827
10.0.22000.795 — https://support.microsoft.com/help/5015814
10.0.10240.19360 — https://support.microsoft.com/help/5015832
10.0.14393.5246 — https://support.microsoft.com/help/5015808
6.1.7601.26022 — https://support.microsoft.com/help/5015861
6.1.7601.26022 — https://support.microsoft.com/help/5015862
6.3.9600.20478 — https://support.microsoft.com/help/5015874
6.3.9600.20478 — https://support.microsoft.com/help/5015877
6.0.6003.21569 — https://support.microsoft.com/help/5015866
6.0.6003.21569 — https://support.microsoft.com/help/5015870
6.2.9200.23771 — https://support.microsoft.com/help/5015863
6.2.9200.23771 — https://support.microsoft.com/help/5015875