February 13, 2018—KB4074587 (Security-only update)
Improvements and fixes
This security update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:
Security updates to Windows Graphics, Windows Kernel, Common Log File System driver, Microsoft Windows Search component, and Windows storage and file systems.
For more information about the resolved security vulnerabilities, see the Security Update Guide.
Important Please apply KB4100480 immediately after applying this update. KB4100480 resolves an elevation of privilege vulnerability in the Windows Kernel for the 64-Bit (x64) version of Windows. This vulnerability is documented in CVE-2018-1038.
Known issues in this update
Because of an issue that affects some versions of antivirus software, this fix is being applied only to the computers on which the antivirus ISV have updated the ALLOW REGKEY.
This issue is resolved in KB4093108. You no longer need the following ALLOW REGKEY to detect and be offered this update:
After installing KB4056897 or any other recent monthly updates, SMB servers may experience a memory leak for some scenarios. This occurs when the requested path traverses a symbolic link, mount point, or directory junction and the registry key is set to 1:
This issue is resolved in KB4103718.
How to get this update
This update is now available for installation through WSUS. To get the standalone package for this update, go to the Microsoft Update Catalog website.
For a list of the files that are provided in this update, download the file information for update 4074587.