I have lived in Memphis for 37 years, Cordova is safe. I would have no problem going out for a jog at any time of the day/night in any area of Cordova. Crime maps can sometimes be misleading, I live in one of the safest areas of Memphis and over the past month, we have had 1 guy breaking into several homes. If you look at a crime map, it would indicate my neighborhood is not safe. Crime maps help and serve as a Starting Point, but sometimes talking to locals is best.
I imagine if you look on a crime map, you will see a few breaks ins and some other petty stuff that can happen anywhere.