Cumulative security update for Internet Explorer: December 19, 2018

Applies to: Internet Explorer 11 on Windows 10Internet Explorer 11 on Windows 8.1 UpdateInternet Explorer 10 on Windows Server 2012


A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. To learn more about the vulnerability, go to CVE-2018-8653.


  • If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

Known issues in this security update

After you install this security update on a computer that is running Windows Server 2012 R2 or Windows 8.1, the About Internet Explorer 11 dialog box will show KB4470199 (the December 11, 2018 security update for Internet Explorer) instead of KB4483187. Users can confirm they are protected by verifying that the version of jscript.dll is 5.8.9600.19230.

How to get and install the update

Method 1: Microsoft Update

This update is available through Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically.

For more information about how to get security updates automatically, see Windows Update: FAQ.

Note For Windows RT and Windows RT 8.1, this update is available through Microsoft Update only.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Deployment information

For deployment details for this security update, go to the following article in the Microsoft Knowledge Base:

File Information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2

Internet Explorer 11

Windows 8 and Windows Server 2012

Internet Explorer 10

Windows 7 and Windows Server 2008 R2

Internet Explorer 11

Windows Server 2008

Internet Explorer 9

Windows Embedded POSReady 2009, and Windows Embedded Standard 2009 XP

Internet Explorer 8