Altair HyperView Player versions 2021.1.0.27 and prior are vulnerable to the use of uninitialized memory vulnerability during parsing of H3D files

Altair HyperView Player versions 2021.1.0.27 and prior are vulnerable to the use of uninitialized memory vulnerability during parsing of H3D files. A DWORD is extracted from an uninitialized buffer and, after sign extension, is used as an index into a stack variable to increment a counter leading to memory corruption.