In Western Digital WD Discovery before 4.0.251.0, a malicious application running with standard user permissions could potentially execute code in the application's process through library injection by using DYLD environment variables.
A post-authentication remote command injection vulnerability in a CGI file in Western Digital My Cloud OS 5 devices that could allow an attacker to build files with redirects and execute larger payloads. This issue affects My Cloud OS 5 devices: before 5.26.300.
Western Digital My Cloud devices before OS5 allow REST API access by low-privileged accounts, as demonstrated by API commands for firmware uploads and installation.