Description of the security update for Lync Server 2013: July 14, 2020

Applies to: Lync Server 2013


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.

More information

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