Illustrative embodiments of systems and methods providing remote management over a wireless wide-area network (WWAN) using short messages are disclosed. In one embodiment, a computing device may include an in-band processor, a wireless transceiver configured for communications over a WWAN, and an out-of-band (OOB) processor capable of communicating over the WWAN using the wireless transceiver irrespective of an operational state of the in-band processor. The OOB processor may be configured to receive a short message via the wireless transceiver, determine whether the short message originated from a trusted remote computing device, and execute at least one operation indicated by the short message in response to determining that the short message originated from a trusted remote computing device.