An issue was discovered in Bento4 1.5.1.0. There is a heap-based buffer over-read in AP4_PrintInspector::AddField in Core/Ap4Atom.cpp when called from AP4_CencSampleEncryption::DoInspectFields in Core/Ap4CommonEncryption.cpp, when called from AP4_Atom::Inspect in Core/Ap4Atom.cpp.