I don’t know the name of any of the actual exploits, however:
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https://devforum.roblox.com/t/how-safe-are-remotefunctions/63336
This post has several replies that mention unsecured functions that can result in your game being ruined, especially if it controls something important. -
Security Tactics and Cheat Mitigation | Documentation - Roblox Creator Hub
This DevHub article also directly states that it’s possible for an exploiter to fake a remote event.
Remote functions and events are the best option for client-server communication, but they’re not necessarily secure channels. A clever hacker may fake a remote event or change the values that are passed along with it. Because of this, you should use basic server-side validation to confirm that the incoming request is legal.