The Foxit JPEG2000/JBIG2 Decoder add-on before 2.0.2009.616 for Foxit Reader 3.0 before Build 1817 does not properly handle a negative value for the stream offset in a JPEG2000 (aka JPX) stream, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via a crafted PDF file that triggers an out-of-bounds read.
http://www.vupen.com/english/advisories/2009/1640
http://www.securityfocus.com/bid/35442
http://www.kb.cert.org/vuls/id/251793
http://www.foxitsoftware.com/pdf/reader/security.htm#0602