Windows DNS Spoofing 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 metrics, successful exploitation of this vulnerability could lead to minor loss of confidentiality (C:L), integrity (I:L) and availability (A:L). What does that mean for this vulnerability?
While we cannot rule out the impact to Confidentiality, Integrity, and Availability, the ability to exploit this vulnerability by itself is limited. An attacker would need to combine this with other vulnerabilities to perform an attack.

Security updates
10.0.17763.4499 — https://support.microsoft.com/help/5027222
10.0.20348.1787 — https://support.microsoft.com/help/5027225
10.0.20348.1784 — https://support.microsoft.com/help/5027319
10.0.14393.5989 — https://support.microsoft.com/help/5027219
6.0.6003.22113 — https://support.microsoft.com/help/5027279
6.0.6003.22113 — https://support.microsoft.com/help/5027277
6.1.7601.26564 — https://support.microsoft.com/help/5027275
6.1.7601.26564 — https://support.microsoft.com/help/5027256
6.2.9200.24314 — https://support.microsoft.com/help/5027283
6.2.9200.24314 — https://support.microsoft.com/help/5027281
6.3.9600.21013 — https://support.microsoft.com/help/5027271
6.3.9600.21013 — https://support.microsoft.com/help/5027282