The Portable Document Format (PDF) specification does not provide any information regarding the concrete procedure of how to validate signatures. Consequently, a Signature Wrapping vulnerability exists in multiple products. An attacker can use /ByteRange and xref manipulations that are not detected by the signature-validation logic. This affects Foxit Reader before 9.4 and PhantomPDF before 8.3.9 and 9.x before 9.4. It also affects eXpert PDF 12 Ultimate, Expert PDF Reader, Nitro Pro, Nitro Reader, PDF Architect 6, PDF Editor 6 Pro, PDF Experte 9 Ultimate, PDFelement6 Pro, PDF Studio Viewer 2018, PDF Studio Pro, PDF-XChange Editor and Viewer, Perfect PDF 10 Premium, Perfect PDF Reader, Soda PDF, and Soda PDF Desktop.

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.

The launchURL function in PDF-XChange Viewer 2.5 (Build 314.0) might allow remote attackers to execute arbitrary code via a crafted PDF file.

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.

Multiple buffer overflows in the Pdf Printer Preferences ActiveX Control in pdfxctrl.dll in Tracker Software PDF-XChange 3.60.0128 allow remote attackers to execute arbitrary code via a long string in the (1) sub_path parameter to the StoreInRegistry function or (2) sub_key parameter to the InitFromRegistry function.

Untrusted search path vulnerability in PDF-XChange Viewer 2.0 Build 54.0 allows local users to gain privileges via a Trojan horse wintab32.dll file in the current working directory, as demonstrated by a directory that contains a .pdf file. NOTE: some of these details are obtained from third party information.