Technical Information

Brief overview of the risk:
A remote code execution vulnerability exists in the way Microsoft Office Visio validates object data when opening up Visio files. An attacker could exploit the vulnerability by sending a specially crafted file which could be included as an e-mail attachment, or hosted on a specially crafted or compromised Web site.
Detailed Information on the risk:

This security update resolves three privately reported vulnerabilities in Microsoft Office Visio that could allow remote code execution if a user opens a specially crafted Visio file. An attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

Further information on this exploit is available at : MS09-005