Microsoft today pushed Windows 10 Mobile Build 15254.587 (10.0.15254.587) as the cumulative update KB4518514 to those on Fall Creators update aka Windows 10 Mobile Version 1709. You can check the update availability by going to Settings–>Update & Security–>Windows update–>Check for updates.
The changelog for the Build 15254.587 mentions only fixes and security updates. Read the full changelog below.
Build 15254.587 Improvements and fixes:
This security update includes quality improvements. Key changes include:
- This build includes all the improvements from KB4516066.
If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.
For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.
KB4516066 Improvements and fixes:
This security update includes quality improvements. Key changes include:
- Provides protections against a new subclass of speculative execution side-channel vulnerabilities, known as Microarchitectural Data Sampling, for 32-Bit (x86) versions of Windows (CVE-2019-11091, CVE-2018-12126, CVE-2018-12127, CVE-2018-12130). Use the registry settings as described in the Windows Client article. (These registry settings are enabled by default for Windows Client OS editions.)
- Security updates to Internet Explorer, Microsoft Scripting Engine, Windows App Platform and Frameworks, Windows Input and Composition, Windows Media, Windows Fundamentals, Windows Authentication, Windows Datacenter Networking, Windows Storage and Filesystems, the Microsoft JET Database Engine, Windows Kernel, Windows Virtualization, and Windows Server.
If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.
