Unpatched or "nulled" (pirated) plugins often contain logic flaws or backdoors that allow Remote Code Execution (RCE) or SQL Injections .
Ethical hackers use a structured workflow to identify vulnerabilities before they are exploited: WordPress Vulnerabilities Hacking WordPress
Using "nulled" themes from unofficial sources, which are frequently pre-packaged with malicious code. How Professionals Assess WordPress Security Unpatched or "nulled" (pirated) plugins often contain logic