The vulnerability is a heap out-of-bounds read in the EVS HAL's "getStreamList()" method. An attacker can craft a "CameraDesc.metadata" byte array, which is parsed without validation, leading to an out-of-bounds read at an attacker-controlled offset within the HAL process's heap. The read data is then exfiltrated back to the attacker, potentially leaking sensitive information like pointers and buffer handles.