.CM0013 File Extension
What is an .CM0013 file?
.CM0013 is Samsung Smart TV Index File
A CM0013 file is a data file created by select Samsung Smart TVs. It is generated by a Smart TV when a storage device, such as a HDD or flash drive, is connected to the TV. The CM0013 file contains an index of the files located on the connected storage device, which allows the Smart TV to play the multimedia files on the storage device.
You most likely will only encounter the CM0013 file if you use a storage device to connect to a Smart TV to play multimedia files. Once you disconnect your storage device from the Samsung Smart TV and connect it to your computer your files are hidden or locked and the CM0013 file is the only file that appears on your storage device. If you delete the CM0013 file and reconnect the storage device to the Smart TV, your files may reappear.
NOTE: CM0013 files are not malicious.