An issue was discovered in BlueStacks 4.110 and below on macOS and on 4.120 and below on Windows. BlueStacks employs Android running in a virtual machine (VM) to enable Android apps to run on Windows or MacOS. Bug is in a local arbitrary file read through a system service call. The impacted method runs with System admin privilege and if given the file name as parameter returns you the content of file. A malicious app using the affected method can then read the content of any system file which it is not authorized to read

BlueStacks App Player (BlueStacks App Player for Windows 3.0.0 to 4.31.55, BlueStacks App Player for macOS 2.0.0 and later) allows an attacker on the same network segment to bypass access restriction to gain unauthorized access.