While the specific hangupphp3 file is largely a relic of older systems, the logic behind the exploit remains a top threat (A03:2021 – Injection in the OWASP Top 10). Here is how to prevent similar issues:
If the $config_path variable is determined by a URL parameter (e.g., hangup.php3?path=... ) and is not hardcoded or validated, an attacker can change that path.
Understanding the V-Desk hangupphp3 Exploit: Risk and Remediation