Nortel has acknowledged some vulnerabilities in Nortel Media Processing Server, which can be exploited by malicious, local users to gain escalated privileges or by malicious people to compromise a user's system.

For more information:
SA33491

The vulnerabilities are reported in Adobe Reader included in Media Processing Server (MPS) 1000.

Solution
Apply patch (please see the vendor's advisory for details).
Original Advisory
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=909609

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers