Microsoft Outlook Remote Code Execution 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. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability.

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
A user needs to be tricked into opening malicious files.

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
To successfully exploit this vulnerability, an attacker would need to gain elevated privileges enabling them to perform file operations in directories they would not normally be able to access or perform.

Are the updates for the Microsoft 365 for Office currently available?
The security update for Microsoft 365 are not immediately available. The updates will be released as soon as possible, and when they are available, customers will be notified via a revision to this CVE information.

Is the Preview Pane an attack vector for this vulnerability?
Yes, the Preview Pane is an attack vector.

Security updates
https — https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
16.0.5504.1000 — https://support.microsoft.com/help/5002683