Login failure via local

Hello everybody,
I have several errors like:


17:04:41 system,error,critical login failure for user \0C\0C via local
17:04:43 system,error,critical login failure for user \01\F0 via local
17:04:44 system,error,critical login failure for user \01\E0\1E via local
17:05:27 system,error,critical login failure for user \C0\FC\E0\03\E0\03p\11\F0\01\1A\85\FC\E83x\FBj\0B\F6\85\F9\F8\F8\CF\F8?\FF\F8\BD\FF\F8\FC\FF\F8?\FF\F8\BD\FF\FC\FC/\F8\BD\FF\F8\FC\FF\FC\FC\0F\F8\BD\FF\F8\FC\F8\BD\FF\FC\1F\F8\FC\FF\FC\FC
\0F\F8\BD\FF\F8\FC\F8\BD\FF\F8\FC\FF\FA?\FF\F9\BF\FF\FC_\FE/\FC\FD\FF\F8\FE\FF\FE\FC\FE?\FF\FE\FE\FF\FE\FF\FF\FF\FC\FC\FF\FE\FD\FF?\FE\CF\FC\FC\0F\F8\BD\FF\F8\FC\FF\FE\8F\80 via local


I don’t think my customer can open my CPE on the roof and frequently connects to serial com port.
Could it be a bug of router os? Can anyone try to connect via ip and result as local?

Thanks in advance

Do you have any type of USB LTE modems or something along those lines installed on the CPE?

I’m having the exact same problem. Did you ever figure this out?