We found the same about 10 days ago.. Upgraded to most current OS and firmware
versions, changed winbox port to a 5 digit port and changed user name from
admin and 10 digit alpha numeric symbol password.
Only found it on wan interface that has a public ip. On almost all boards
including ccr dev
Fyi, credit to J.P. Douros from RPM Provioning Management for bringing it to
our attention and providing the solution.
RPM manages our Cisco UBR10k CMTS.
Great support company.
From: mikrotik-users-boun...@wispa.org on
behalf of Bob Pensworth via Mikrotik-users