Unspecified vulnerability in Adobe Acrobat 9.x before 9.2 allows attackers to bypass intended file-extension restrictions via unknown vectors.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6466
http://www.vupen.com/english/advisories/2009/2898
http://www.us-cert.gov/cas/techalerts/TA09-286B.html
http://www.securityfocus.com/bid/36638
http://www.adobe.com/support/security/bulletins/apsb09-15.html