Windows iSCSI Discovery Service Remote Code Execution Vulnerability

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
Successful exploitation of this vulnerability requires a user to place a call to trigger the 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 gather information specific to the environment of the targeted component.

Security updates
10.0.17763.3046 — https://support.microsoft.com/help/5014692
10.0.19043.1766 — https://support.microsoft.com/help/5014699
10.0.20348.770 — https://support.microsoft.com/help/5014678
10.0.20348.770 — https://support.microsoft.com/help/5014677
10.0.22000.739 — https://support.microsoft.com/help/5014697
10.0.10240.19325 — https://support.microsoft.com/help/5014710
10.0.14393.5192 — https://support.microsoft.com/help/5014702
6.1.7601.25984 — https://support.microsoft.com/help/5014748
6.1.7601.25984 — https://support.microsoft.com/help/5014742
6.3.9600.20402 — https://support.microsoft.com/help/5014738
6.3.9600.20402 — https://support.microsoft.com/help/5014746
6.0.6003.21507 — https://support.microsoft.com/help/5014752
6.0.6003.21507 — https://support.microsoft.com/help/5014743
6.2.9200.23736 — https://support.microsoft.com/help/5014747
6.2.9200.23736 — https://support.microsoft.com/help/5014741