Windows WebBrowser Control Remote Code Execution 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 take additional actions prior to exploitation to prepare the target environment.

According to the CVSS metric, privileges required is low (PR:L). What does that mean for this vulnerability?
Any authenticated user could trigger this vulnerability. It does not require admin or other elevated privileges.

Security updates
10.0.17763.3287 — https://support.microsoft.com/help/5016623
10.0.19043.1889 — https://support.microsoft.com/help/5016616
10.0.20348.887 — https://support.microsoft.com/help/5016627
10.0.22000.856 — https://support.microsoft.com/help/5016629
10.0.10240.19387 — https://support.microsoft.com/help/5016639
10.0.14393.5291 — https://support.microsoft.com/help/5016622
6.1.7601.26065 — https://support.microsoft.com/help/5016676
6.1.7601.26065 — https://support.microsoft.com/help/5016679
6.3.9600.20520 — https://support.microsoft.com/help/5016681
6.3.9600.20520 — https://support.microsoft.com/help/5016683
6.0.6003.21616 — https://support.microsoft.com/help/5016669
6.0.6003.21616 — https://support.microsoft.com/help/5016686
6.2.9200.23817 — https://support.microsoft.com/help/5016672
6.2.9200.23817 — https://support.microsoft.com/help/5016684