File and directory permissions have been corrected to prevent unintended users from modifying or accessing resources. It would be more difficult for an authenticated attacker to now traverse through the files and directories. This can only be exploited once an attacker has already found a way to get authenticated access to the device. 

Western Digital EdgeRover before 0.25 has an escalation of privileges vulnerability where a low privileged user could load malicious content into directories with higher privileges, because of how Node.js is used. An attacker can gain admin privileges and carry out malicious activities such as creating a fake library and stealing user credentials.