High Threat

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Western Digital MyCloud PR4100. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HTTP responses provided to the ddns-start program. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length, heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device.

My Cloud OS 5 Firmware 5.29.102 includes updates to help improve the security of your My Cloud OS 5 devices.