Summary

This security update resolves vulnerabilities when a Lync Server or Skype for Business Server does not properly sanitize a specially crafted request. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2019-1490.

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

Method 1: Microsoft Update

This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

More Information

Security update deployment information

For deployment information about this update, see security update deployment information: December 10, 2019.

Security update replacement information

This security update does not replace any previously released security update.

File hash information

File name

SHA1 hash

SHA256 hash

SkypeServerUpdateInstaller.exe

874D0FA767C31ADC9F3EBF3975A2681394C32B53

74F5B79FA72B8FC5BE513D27F1948A6CA3C3F1CB1F29791C0940F5C896FF2427

How to get help and support for this security update

Help for installing updates: Windows Update: FAQ

Security solutions for IT professionals: TechNet Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure

Local support according to your country: International Support

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