The AP4_HdlrAtom class in Core/Ap4HdlrAtom.cpp in Bento4 version 1.5.0-617 uses an incorrect character data type, leading to a heap-based buffer over-read and application crash in AP4_BytesToUInt32BE in Core/Ap4Utils.h.Referenceshttps://github.com/axiomatic-systems/Bento4/issues/187https://github.com/axiomatic-systems/Bento4/commit/5eb8cf89d724ccb0b4ce5f24171ec7c11f0a7647https://blogs.gentoo.org/ago/2017/09/14/bento4-heap-based-buffer-overflow-in-ap4_bytestouint32be-ap4utils-h/