Remote Code Execution (RCE) is a serious cybersecurity vulnerability that allows attackers to run their own code on a remote computer or server without authorization. This means a hacker can exploit a flaw in software to take control of the targeted system, potentially installing malware, stealing data, or causing other damage. RCE attacks are particularly dangerous because they often allow attackers to bypass security controls and gain full access to sensitive systems. Preventing RCE involves keeping software updated, applying security patches, and following best practices for secure coding.