DHCP Server Service Remote Code Execution Vulnerability

According to the CVSS metric, the attack vector is adjacent (AV:A). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires that an attacker will need to first gain access to the restricted network before running an attack.

How could an attacker exploit this vulnerability?
An unauthenticated attacker could leverage a specially crafted call to the DHCP service to exploit this vulnerability.

Security updates
10.0.17763.4252 — https://support.microsoft.com/help/5025229
10.0.20348.1668 — https://support.microsoft.com/help/5025230
10.0.14393.5850 — https://support.microsoft.com/help/5025228
6.0.6003.22015 — https://support.microsoft.com/help/5025271
6.0.6003.22015 — https://support.microsoft.com/help/5025273
6.1.7601.26466 — https://support.microsoft.com/help/5025279
6.1.7601.26466 — https://support.microsoft.com/help/5025277
6.2.9200.24216 — https://support.microsoft.com/help/5025287
6.2.9200.24216 — https://support.microsoft.com/help/5025272
6.3.9600.20919 — https://support.microsoft.com/help/5025285
6.3.9600.20919 — https://support.microsoft.com/help/5025288