Technical Information

Brief overview of the risk:
This security update resolves one publicly disclosed vulnerability and four privately reported vulnerabilities in Microsoft Office. The most severe vulnerability could allow remote code execution if a user opens or previews a specially crafted RTF e-mail message.
Detailed Information on the risk:

A remote code execution vulnerability exists in the way that affected Microsoft Office software parses specially crafted Rich Text Format (RTF) data. 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 : MS10-087