Windows Initial Machine Configuration Elevation of Privilege Vulnerability

According to the CVSS metric, the attack vector is physical (AV:P). What does that mean for this vulnerability?
To exploit this vulnerability, an attacker needs physical access to the victim's machine.

How could an attacker exploit this vulnerability?
An unauthenticated attacker can use a specially crafted IMC.hiv file (with the registry configuration that needs to be changed), which could lead to elevation of privilege.

What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Security updates
10.0.17763.6189 — https://support.microsoft.com/help/5041578
10.0.20348.2655 — https://support.microsoft.com/help/5041160
10.0.22000.3147 — https://support.microsoft.com/help/5041592
10.0.19044.4780 — https://support.microsoft.com/help/5041580
10.0.22621.4037 — https://support.microsoft.com/help/5041585
10.0.25398.1085 — https://support.microsoft.com/help/5041573
10.0.26100.1457 — https://support.microsoft.com/help/5041571
10.0.10240.20751 — https://support.microsoft.com/help/5041782
10.0.14393.7259 — https://support.microsoft.com/help/5041773
6.3.9600.22134 — https://support.microsoft.com/help/5041828