Stack-based buffer overflow in Microsoft Office Access allows remote, user-assisted attackers to execute arbitrary code via a crafted Microsoft Access Database (.mdb) file. NOTE: due to the lack of details as of 20071210, it is not clear whether this issue is the same as CVE-2007-6026 or CVE-2005-0944.
http://www.us-cert.gov/current/index.html#microsoft_access_database_file_attachment
http://www.informationweek.com/shared/printableArticle.jhtml?articleID=204802012