This security update resolves vulnerabilities that exist when Skype for Business Server incorrectly handles OAuth token validation. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2020-1025.
Note To apply this security update, you must have the release version of Skype for Business 2019 CU 2 installed on the computer.
How to get and install the update
To get this update, install the following updates: