Microsoft Excel Information Disclosure Vulnerability

Is the Preview Pane an attack vector for this vulnerability?
No, the Preview Pane is not an attack vector.

According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is information disclosure?
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 which could leak data.

What type of information could be disclosed by this vulnerability?
The type of information that could be disclosed if an attacker successfully exploited this vulnerability is sensitive information.

Security updates
https — https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
16.77.23091003 — https://go.microsoft.com/fwlink/p/?linkid=831049
16.0.10402.20000 — https://support.microsoft.com/help/5002470
16.0.5413.1000 — https://support.microsoft.com/help/5002496
15.0.5589.1000 — https://support.microsoft.com/help/5002488