MS15-022: Description of the security update for Microsoft Excel 2010: March 10, 2015

Applies to: Microsoft Office 2010 Service Pack 2Excel 2010Excel Home and Student 2010 More

Introduction


This security update resolves vulnerabilities in Microsoft Office that could allow remote code execution if an attacker convinces a user to open or preview a specially crafted Microsoft Excel workbook in an affected version of Office software. An attacker who successfully exploited the vulnerabilities could gain the same user rights as the current user.

Improvements and fixes

This security update also contains fixes for the following nonsecurity issue:

Updates Excel 2010 to work correctly with design changes that were made to the Microsoft Forms ActiveX Control (FM20.dll) shared component library. For more information, see the following Microsoft Knowledge Base article:
3025036 "Cannot insert object" error in an ActiveX custom Office solution after you install the MS14-082 security update



Summary


Microsoft has released security bulletin MS15-022. Learn more about how to obtain the fixes that are included in this security bulletin:

How to obtain help and support for this security update

Help installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security support and troubleshooting

Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center

Local support according to your country: International support

More information about this security update


Download information

This update is available for download from the Microsoft Download Center.

Known issues with this security update



  • This security update opts Microsoft Word, Excel, or PowerPoint into local computer lockdown, a feature control for Internet Explorer, to prevent scripts in Office documents from running with elevated user rights.

    Specifically, in a side-by-side scenario of Office 2003 and either the 2007 Microsoft Office suite or Office 2010, the changed registry keys in this security update may also affect Office 2003. This may cause some unexpected behavior in Office 2003.

    Workaround

    ActiveX kill bits may be used to completely block ActiveX controls that could lead to HTML script execution.

  • After you install this security update, Excel may stop responding (hang) when you copy and paste content between worksheets. To resolve this issue, install the following update on all affected computers.

    2956084 April 14, 2015, update for Excel 2010

Prerequisites to apply this security update

To apply this security update, you must have Service Pack 2 for Office 2010 installed on the computer.

Restart information

You may have to restart the computer after you install this security update.

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message is displayed that advises you to restart the computer.

To help reduce the possibility that a restart will be required, stop all affected services and close all applications that may use the affected files before you install this security update.

Learn about why you may be prompted to restart your computer after you install a security update on a Windows-based computer.

Security update replacement information

This security update replaces update 2956081.

Removal information

Note We do not recommend that you remove any security update.

To remove this security update, use the Add or Remove Programs item or the Programs and Features item in Control Panel.

Note When you remove this security update, you may be prompted to insert the disc that contains Microsoft Office. Additionally, you may not have the option to uninstall this security update from the Add or Remove Programs item or the Programs and Features item in Control Panel. There are several possible causes of this issue.

Learn about the ability to uninstall Office updates.