All of those passwords, except one, are the default colors.
Anubhav made a list of passwords that occur most frequently:
admin — 4621 times
123456 — 698 times
12345 — 575 times
xc3511 — 530 times
GMB182 — 495 times
Zte521 — 415 times
password — 399 times
oelinux123 — 385 times
jauntech — 344 times
1234 — 341 times
All of those passwords, except one, are the default colors. GMB182 often used by operators of botnets means that the devices were seized by hackers and is configured to intercept data or organizing the attacks.
If you have installed one of the above passwords, it makes sense to change it because when you try hacking the device, brute force credentials, the hackers will point them in the first place.
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