Windows MSHTML Platform Security Feature Bypass Vulnerability

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.

According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of confidentiality (C:H), integrity (I:H), and availability (A:H). What does that mean for this vulnerability?
An attacker who successfully exploited this vulnerability could gain high privileges, which include read, write, and delete functionality.

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.

The Security Updates table indicates that this vulnerability affects all supported versions of Microsoft Windows. Why are IE Cumulative updates listed for Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2?
While Microsoft has announced retirement of the Internet Explorer 11 application on certain platforms and the Microsoft Edge Legacy application is deprecated, the underlying MSHTML, EdgeHTML, and scripting platforms are still supported. The MSHTML platform is used by Internet Explorer mode in Microsoft Edge as well as other applications through WebBrowser control. The EdgeHTML platform is used by WebView and some UWP applications. The scripting platforms are used by MSHTML and EdgeHTML but can also be used by other legacy applications. Updates to address vulnerabilities in the MSHTML platform and scripting engine are included in the IE Cumulative Updates; EdgeHTML and Chakra changes are not applicable to those platforms.
To stay fully protected, we recommend that customers who install Security Only updates install the IE Cumulative updates for this vulnerability.

Security updates
10.0.17763.4851 — https://support.microsoft.com/help/5030214
10.0.20348.1970 — https://support.microsoft.com/help/5030216
10.0.20348.1964 — https://support.microsoft.com/help/5030325
10.0.22000.2416 — https://support.microsoft.com/help/5030217
10.0.19044.3448 — https://support.microsoft.com/help/5030211
10.0.22621.2283 — https://support.microsoft.com/help/5030219
10.0.10240.20162 — https://support.microsoft.com/help/5030220
10.0.14393.6252 — https://support.microsoft.com/help/5030213
6.1.7601.26713 — https://support.microsoft.com/help/5030265
6.1.7601.26713 — https://support.microsoft.com/help/5030261
1.001 — https://support.microsoft.com/help/5030209
6.2.9200.24462 — https://support.microsoft.com/help/5030278
6.2.9200.24462 — https://support.microsoft.com/help/5030279
6.3.9600.21563 — https://support.microsoft.com/help/5030269
6.3.9600.21563 — https://support.microsoft.com/help/5030287