January 8, 2019 - KB4480970 (Monthly Rollup)
Applies to: Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1
Improvements and fixes
This security update addresses the following issues:
- Provides protections against an additional subclass of speculative execution side-channel vulnerability known as Speculative Store Bypass(CVE-2018-3639) for AMD-based computers. These protections aren't enabled by default. For Windows client (IT pro) guidance, follow the instructions in KB4073119. For Windows Server guidance, follow the instructions in KB4072698. Use these guidance documents to enable mitigations for Speculative Store Bypass (CVE-2018-3639). Additionally, use the mitigations that have already been released for Spectre Variant 2 (CVE-2017-5715) and Meltdown (CVE-2017-5754).
- [UPDATED 1/11] Addresses an issue that affects PowerShell remoting loop back using non-administrator accounts. For more details, see Windows Security change affecting PowerShell.
- Security updates to Windows Kernel, Windows Storage and Filesystems, Windows Wireless Networking, and the Microsoft JET Database Engine.
For more information about the resolved security vulnerabilities, please refer to the
Security Update Guide.
Known issues in this update
How to get this update
Before installing this update
Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes.
If you are using Windows Update, the latest SSU (
KB3177467) will be offered to you automatically. To get the stand-alone package for the latest SSU, go to the
Microsoft Update Catalog.
Install this update
This update will be downloaded and installed automatically from
Windows Update.
To get the stand-alone package for this update, go to the
Microsoft Update Catalog website.
File information
For a list of the files that are provided in this update, download the
file information for update 4480970.
Download KB4480970 MSU for Windows 7 32-bit (x86) - 146.7 MB
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