Microsoft Word Information Disclosure Vulnerability

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 memory layout - the vulnerability allows an attacker to collect information that facilitates predicting addressing of the memory.

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
Exploitation of the vulnerability requires that a user open a specially crafted file.
In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file., In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) containing a specially crafted file designed to exploit the vulnerability.
An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file.

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

Security updates
16.0.10392.20000 — https://support.microsoft.com/kb/5002294
16.0.5369.1000 — https://support.microsoft.com/kb/5002305
16.0.15601.20238 — https://support.microsoft.com/help/5002291
https — https://docs.microsoft.com/en-us/officeupdates/office365-proplus-security-updates
16.0.10392.20000 — https://support.microsoft.com/kb/5002276
16.0.15601.20238 — https://support.microsoft.com/help/5002296
15.0.5501.1000 — https://support.microsoft.com/kb/5002261
15.0.5501.1000 — https://support.microsoft.com/kb/5002217
16.0.5369.1000 — https://support.microsoft.com/kb/5002223
15.0.5501.1000 — https://support.microsoft.com/kb/5002235