Microsoft is aware of detailed information that has been published about a class of vulnerabilities that are referred to as speculative execution side-channel attacks.
To learn more about the vulnerability, go to ADV180002.
How to obtain and install the update
This update is available through the Microsoft Download Center website, Windows Server Update Services (WSUS), or the Microsoft Update Catalog website.
Note: This update will not be downloaded and installed automatically via Windows Update (unless you are using WSUS).
How to obtain 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