I've seen this from banks, for access to my money & credit...
Both FirstDirect and HSBC used to have a 9 character password for their "digital secure key"s (basically their apps on my phone, in the direct use use-case). 9. Just 9. Though at least alpha-numeric & case-sensitive, so some room for reasonable entropy.
Worse: for some reason HSBC recently changed theirs to 6 numeric characters. 6. Numeric only. And while forcing me to change, they repeatedly assured me that this was just as secure as before… Luckily for me all I have with them currently is a mortgage that I'll be paying off in (checks calendar) a week and a half, at which point the whole lot gets closed and they can make it a two digit PIN for all it'll affect my financial security!
(UK here, not sure if they have different restrictions in different territories but I suspect not)