UNC paths work just fine for me in CMD CLI (Not PowerShell):
C:\Windows\System32>dir \192.168.1.7
The specified path is invalid.
C:\Windows\System32>dir \192.168.1.7\shared
Volume in drive \192.168.1.7\shared is shared
Volume Serial Number is 12FB-DA4F
Directory of \192.168.1.7\shared
06/27/2018 10:32 PM .
06/15/2018 06:37 PM …
10/13/2016 08:44 PM applestuff
…
Though this is dependent on my local user account having read access to the ‘shared’ folder on 192.168.1.7