PrintHTML API Remote Code Execution Vulnerability

How could an attacker successfully exploit this vulnerability?
An attacker could successfully exploit this vulnerability by invoking the PrintHTML API from a locally running application (or by tricking a user into doing so) which could allow the attacker to launch an app via application protocols without prompting the user.

According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?
The word Remote in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally.
For example, when the score indicates that the Attack Vector is Local and User Interaction is Required, this could describe an exploit in which an attacker, through social engineering, convinces a victim to download and open a specially crafted file from a website which leads to a local attack on their computer.

Security updates
10.0.22621.2428 — https://support.microsoft.com/help/5031354
10.0.19045.3570 — https://support.microsoft.com/help/5031356
10.0.20348.2031 — https://support.microsoft.com/help/5031364
10.0.22000.2538 — https://support.microsoft.com/help/5031358
10.0.17763.4974 — https://support.microsoft.com/help/5031361
10.0.10240.20232 — https://support.microsoft.com/help/5031377
10.0.14393.6351 — https://support.microsoft.com/help/5031362