Microsoft released the October 2019 Microsoft Office security updates, with 1 advisory (Windows 10 Servicing Stack Update) and updates for 59 vulnerabilities. Customers are strongly advised to install them as soon as possible given that some of the Microsoft Office updates published today also resolve various critical vulnerabilities. The October 2019 Patch Tuesday security updates are available via the Microsoft Update platform and the Download Center. Users have to click on the corresponding Knowledge Base article in the table below and scroll down to the “How to download and install the update”” section.”
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-releases-the-october-2019-security-updates-for-office/