MS15-088: Unsafe command-line parameter passing could allow information disclosure: August 11, 2015

Applies to: Windows 10Windows Server 2012 R2 DatacenterWindows Server 2012 R2 Standard


This security update helps resolve an information disclosure vulnerability in Windows, Internet Explorer, and Microsoft Office. To exploit the vulnerability, an attacker would first have to use another vulnerability in Internet Explorer to run code in the sandboxed process. The attacker could then run Notepad, Visio, PowerPoint, Excel, or Word by using an unsafe command-line parameter to effect information disclosure. To be protected from the vulnerability, customers must apply the updates that are provided in this bulletin and also the update for Internet Explorer that is provided in MS15-079. Similarly, customers who are running an affected Office product must also install the applicable updates that are provided in MS15-081.

For more information about the updates that are required to address this vulnerability, see Microsoft Knowledge Base Article 3080057, Microsoft Knowledge Base Article 3080790, and Microsoft Knowledge Base Article 3082442.

To learn more about the vulnerability, see Microsoft Security Bulletin MS15-088.

More Information

  • All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.
  • 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.

Additional information about this security update

The following articles contain additional information about this security update as it relates to individual product versions. The articles may contain known issue information.
  • 3079757 MS15-088 Description of the security update for Windows, Internet Explorer, and Office: August 11, 2015
  • 3046017 MS15-088 Description of the security update for Windows, Internet Explorer, and Office: August 11, 2015

How to obtain and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see
Get security updates automatically.

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