Instant failure of PCI-DSS compliance audits, destroying your ability to process credit cards. 4. Zero Support and Zero Updates

Automated scripts that turn your server into a source for millions of spam emails, destroying your IP address reputation.

That said, here's a general overview of cPanel WHM and some insights into the versions you mentioned:

Instead of using a nulled version of cPanel WHM, you can consider free alternatives that offer similar features and functionalities. Here are 19 free alternatives to cPanel WHM: