Microsoft Visio Viewer Tree Object Type Confusion Vulnerability

A remote code execution vulnerability exists in the way that Microsoft Visio Viewer handles memory when rendering specially crafted Visio files. 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 affected than users who operate with administrative user rights.