Cumulative security update for Internet Explorer: December 11, 2018

Summary

This security update resolves several reported vulnerabilities in Internet Explorer. The most severe of these vulnerabilities could allow remote code execution if a user views a specially crafted webpage in Internet Explorer. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures.Additionally, see the following articles for more information about this cumulative update:

• Windows Server 2008 SP2 update history

• Windows 7 SP1 and Windows Server 2008 R2 SP1 update history

• Windows Server 2012 update history

• Windows 8.1 and Windows Server 2012 R2 update history

• Windows 10 and Windows Server 2016 update history
  Important

• The fixes that are included in this Security Update for Internet Explorer (KB 4470199) are also included in the December 2018 Security Monthly Quality Rollup. Installing either the Security Update for Internet Explorer or the Security Monthly Quality Rollup installs the fixes that are in this update.

• If you use update management processes other than Windows Update and you automatically approve all security updates classifications for deployment, this Security Update for Internet Explorer (KB 4470199), the December 2018 Security Only Quality Update, and the December 2018 Security Monthly Quality Rollup are deployed. We recommend that you review your update deployment rules to make sure that the desired updates are deployed.

• This Security Update for Internet Explorer is not applicable for installation on a computer on which the Security Monthly Quality Rollup or the Preview of Monthly Quality Rollup from December 2018 (or a later month) is already installed. This is because those updates contain all the fixes that are in this Security Update for Internet Explorer.

• 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 security update 4483187 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 stand-alone package for this update, go to the Microsoft Update Catalog website.

Deployment information

For deployment details for this security update, see the following article in the Microsoft Knowledge Base:Security update deployment information: December 11, 2018

More Information

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How to get help and support for this security update

Help for installing updates: Windows Update: FAQHelp for protecting your Windows-based computer from viruses and malware: Microsoft SecureLocal support according to your country: International Support

File informationFor a list of the files that are provided in this cumulative update, download the file information for cumulative update KB 4470199.

File hash information

File name	SHA1 hash	SHA256 hash
Windows8.1-KB4470199-x86.msu	F34EC731B5AC143D576EE3D6FCF5CB194274DB81	FD8DE343FB8CD4346466F6F840EBA4B162614B4DAC17C48D51DC44BACED1B5C8
Windows8.1-KB4470199-arm.msu	EFEB009B88356B3701672D854F6BDA03DAD360C8	C5DA04DF8AB208CB186580AE8A7373B659FEA1CE0F27EC5E69E78607099611C7
Windows8.1-KB4470199-x64.msu	8E126BA175C7D291F08B82B59E5A135CA7103E97	2D90638E0F6E493A9BDEE1690E6587DD1927BAD9F4C506201937B491C4CE204E
Windows8-RT-KB4470199-x64.msu	EA3079F6704B5BC49167AFB5AC243225E3EDA301	A42F293FAB3A4841FAD33413DA1F8B7E5AB5431A8BAB6DA0DD03DB95F6244C77
IE11-Windows6.1-KB4470199-X64.msu	0B0CFFA80C0A982D569E17FEEEBBA692F7F991EA	988DBA74B1EC3C937D5C7C17424FB21BBBBE3811B4DA27522944013F5DF9BA98
IE11-Windows6.1-KB4470199-X86.msu	00CDE4E8C03CC549EEDCF21E9A447AB7BBCB1C0C	2A8A07C07AF0996334D2782254F695B1F8905F7108CC043D22E28B7087821EB0
IE9-Windows6.0-KB4470199-X86.msu	4C9BF1D04E20DF45A0FD1BCFADAE7A8B3F19F1F0	B5AE0FAC1D322101FB06188DA73748297955391EE9B38F9F8C2EDE8B606163B4
IE9-Windows6.0-KB4470199-X64.msu	A2DF530B2C22CA6CB66FE8EEAD7A3D462F064BF0	83C382BEE6301300C9294F044F8EE4627DFDD65FEE31815DCC58CD96961D7058