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:

Important 

  • The fixes that are included in this Security Update for Internet Explorer (KB 4339093) are also included in the July 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 4339093), the July 2018 Security Only Quality Update, and the July 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 July 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.

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: July 10, 2018

More Information

File information

For a list of the files that are provided in this cumulative update, download the file information for cumulative update 4339093.

File hash information

File name

SHA1 hash

SHA256 hash

Windows8.1-KB4339093-x86.msu

A2648148013F75BE786D9DE8CC27482509C27D40

074089C40E849D248952C4B04097339E411B72956E0D0B7C41DA368ED10BACDD

Windows8.1-KB4339093-x64.msu

943100CE100AEA908AA1996AA9BF508B88D8A3F3

B254576B3FC36A4A043AA1CB1F0B8C76DF91D34011E6B93FCAA56640A51637EF

Windows8-RT-KB4339093-x64.msu

5C6B774719F0196739EC19BC79F298E8FC752EBE

C210A7383031601B738DA59F4DCF4F1477FDA97081DF3B44BBD4BAB8CF14ACF2

IE11-Windows6.1-KB4339093-X64.msu

258052D2DD8589E140F447F132EF399F92FD8AE8

5E52A4D111CBD36CA3930DCF52929812C3A65CB71916398A7EE869A61D784194

IE11-Windows6.1-KB4339093-X86.msu

AD60CFA5DF0565BF0A4929C63014F742A85E1B6E

58596640FB3218E7299D81BC44751676A1D8D6A9A74634F60D4A613FBBA290B5

IE9-Windows6.0-KB4339093-X86.msu

A162D340AA99680F224E72BCB758EEC5246693FF

A742F2ECA97FC8B9F1CEF616E913850B65E63EFFBD1FAC93BED9C0114EF41E27

IE9-Windows6.0-KB4339093-X64.msu

FA830044057E5EF0EBC3084DC52F66A73D64F63B

B6566A17BCE274909ED2014A688038C2D28B2B2790AD64DB6C4490B3C0126A0F

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