Cracked plugins are notorious for being unstable. Since the "crack" involves modifying the software's original code to bypass license checks, it often introduces bugs that the original developers never intended.
There are incredible free, open-source synthesizers like Vital or Surge XT that offer professional-grade sound design capabilities without the risks associated with cracked software.
Many cracked installers act as a "wrapper" for malicious code that can steal your passwords, bank details, or personal files.