Windows Advanced Local Procedure Call (ALPC) 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, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?
This vulnerability could lead to a contained execution environment escape. Please refer to AppContainer Isolation for more information.

What privileges could be gained by an attacker who successfully exploited the vulnerability?
A domain user could use this vulnerability to elevate privileges to SYSTEM assigned integrity level.

Security updates
10.0.17763.3650 — https://support.microsoft.com/help/5019966
10.0.19043.2251 — https://support.microsoft.com/help/5019959
10.0.20348.1249 — https://support.microsoft.com/help/5019081
10.0.20348.1251 — https://support.microsoft.com/help/5019080
10.0.22000.1219 — https://support.microsoft.com/help/5019961
10.0.22621.819 — https://support.microsoft.com/help/5019980
10.0.10240.19567 — https://support.microsoft.com/help/5019970
10.0.14393.5501 — https://support.microsoft.com/help/5019964
6.3.9600.20671 — https://support.microsoft.com/help/5020023
6.3.9600.20670 — https://support.microsoft.com/help/5020010