MS13-022: Vulnerability in Silverlight could allow remote code execution: March 12, 2013

Applies to: Microsoft Silverlight 5


Microsoft has released security bulletin MS13-022. To view the complete security bulletin, go to one of the following Microsoft websites:

How to obtain help and support for this security update

Help installing updates: Support for Microsoft Update

Security solutions for IT professionals:
TechNet Security Troubleshooting and Support

Help protect your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country:
International Support

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Known issues with this security update

  • The detection and installation logic for this update does not verify compatibility of Microsoft Silverlight for the version of Internet Explorer that is installed on the system. For example, the update could be offered to a system that has Silverlight 4 for Windows XP running in Internet Explorer 6. After the update is successfully installed, Silverlight 4 will be upgraded to Silverlight 5 (version 5.1.20125.0). However, Silverlight 5 is incompatible with Internet Explorer 6. 

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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 times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.