Multiple information disclosure vulnerabilities have been found in Microsoft SQL Server. Malicious user can exploit these vulnerabilities to obtain sensitive information. These vulnerabilities can be exploited remotelly via speculative execution side-channel attack to obtain sensetive information.
Microsoft SQL Server 2016 for x64-based Systems Service Pack 1 (CU)
Microsoft SQL Server 2016 for x64-based Systems Service Pack 1
Microsoft SQL Server 2017 for x64-based Systems (CU)
Microsoft SQL Server 2017 for x64-based Systems
Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel). In addition, you may also need to install firmware updates from manufacturer of your device for increased protection. Check for relevant updates with manufacturer of your device.