Western Digital has released a number of firmware updates for their My Cloud series of NAS devices that address the Hearbleed bug.
My Cloud (3.04.01-230) - http://www.wd.com/wdproducts/updates/?f ... fmycloud_s
My Cloud EX2 (1.02.08 ) - http://www.wd.com/wdproducts/updates/?f ... ycloud_ex2
My Cloud EX4 (1.02.36) - http://www.wd.com/wdproducts/updates/?f ... ycloud_ex4