> IIRC you need a possibly predictable password form cambo to do get full root shell on a lot of devices.
If we're ignoring access-control-violating logic errors, then Mikrotik's shells are quite locked down. As you'd expect, you can provision multiple users with a variety of privs... and even make a user that has no configuration modification privs at all.
You can also very easily deny remote access to any credentials other than a username and SSH key. Good luck predicting an SSH key.
But if we're not ignoring coding errors that bypass access control, then I expect that Cambium is no less vulnerable than anything else out there. They're certainly using either BSD or Linux with some proprietary goop layered on top to make it look super sexy.