Tracker PDF-XChange Viewer and Viewer AX SDK before 2.5.322.8 mishandle conversion from YCC to RGB colour spaces by calculating on the basis of 1 bpc instead of 8 bpc, which might allow remote attackers to execute arbitrary code via a crafted PDF document.
Heap-based buffer overflow in Tracker Software PDF-XChange before 2.5.208 allows remote attackers to execute arbitrary code via a crafted Define Huffman Table header in a JPEG image file stream in a PDF file.