This security update resolves vulnerabilities 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 Lync Server 2013 installed on the computer.
How to get and install the update
To get this update, install the following updates:
Security update deployment information
For deployment information about this update, see security update deployment information: July 14, 2020.
How to get help and support for this security update
Protect yourself online: Windows Security support
Learn how we guard against cyber threats: Microsoft Security