Microsoft Excel Information Disclosure Vulnerability

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
An attacker must send a user a malicious Office file and convince them to open it.

What type of information could be disclosed by this vulnerability?
An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.

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

There are multiple update packages available for some of the affected software. Do I need to install all the updates listed in the Security Updates table for the software?
Yes. Customers should apply all updates offered for the software installed on their systems. If multiple updates apply, they can be installed in any order.

Security updates
16.0.10417.20059 — https://support.microsoft.com/help/5002797
16.0.5522.1000 — https://support.microsoft.com/help/5002788
16.0.10417.20059 — https://support.microsoft.com/help/5002796
https — https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
16.102.25101223 — https://go.microsoft.com/fwlink/p/?linkid=831049
16.0.5522.1000 — https://support.microsoft.com/help/5002794
16.0.5522.1000 — https://support.microsoft.com/help/5002719
16.0.5522.1000 — https://support.microsoft.com/help/5002757
16.0.5522.1000 — https://support.microsoft.com/help/5002341
16.0.5522.1000 — https://support.microsoft.com/kb/5002720