Remote Code Execution (RCE): What It Is and Why It's the Worst-Case Vulnerability
Remote code execution means an attacker can run their own commands on a device they don't own or control — regardless of where that device physically is. It's considered the most severe class of vulnerability a piece of software can have, because it doesn't just expose data or crash a service; it hands the attacker the ability to do essentially anything the compromised program is allowed to do.

