CVE-2025-4717 is a SQL Injection vulnerability identified in version 2.0 of the PHPGurukul Company Visitor Management System. The vulnerability exists in an unspecified function within the /visitors-form.php file, specifically through the manipulation of the 'fullname' parameter. This parameter is not properly sanitized or validated before being used in SQL queries, allowing an attacker to inject malicious SQL code. The vulnerability can be exploited remotely without any authentication or user interaction, making it accessible to unauthenticated attackers over the network. The CVSS 4.0 base score is 6.9, indicating a medium severity level. The vector string (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N) shows that the attack vector is network-based, requires low attack complexity, no privileges, no user interaction, and impacts confidentiality, integrity, and availability to a limited extent. Although the vulnerability is classified as medium severity, the fact that it allows remote code injection into the database backend means attackers could potentially extract sensitive visitor information, modify or delete records, or escalate attacks further within the network. No known exploits are currently reported in the wild, and no patches or fixes have been published yet. The vulnerability disclosure is recent (May 2025), and organizations using this system should treat it as a critical risk due to the nature of SQL injection attacks and the sensitive data typically handled by visitor management systems.

For European organizations, the impact of this vulnerability could be significant, especially for companies that rely on the PHPGurukul Visitor Management System to track and manage physical access to their facilities. Visitor management systems often store personally identifiable information (PII) such as names, contact details, visit times, and host information. Exploitation of this SQL injection vulnerability could lead to unauthorized disclosure of sensitive visitor data, violating GDPR requirements and resulting in regulatory penalties. Furthermore, attackers could manipulate or delete visitor logs, undermining physical security controls and audit trails. This could facilitate unauthorized physical access or cover tracks after an intrusion. The ability to remotely exploit the vulnerability without authentication increases the risk of widespread attacks, particularly in organizations with internet-facing visitor management portals. Additionally, attackers might leverage this vulnerability as a foothold to pivot into internal networks, potentially compromising other critical systems. The medium CVSS score underestimates the potential business impact due to the sensitive nature of the data and the critical role visitor management plays in physical security.

Given the absence of an official patch, European organizations should implement immediate compensating controls. First, restrict external network access to the visitor management system by placing it behind a VPN or firewall rules that limit access to trusted IP addresses only. Second, implement web application firewall (WAF) rules specifically designed to detect and block SQL injection attempts targeting the 'fullname' parameter in /visitors-form.php. Third, conduct thorough input validation and sanitization on all user-supplied data, especially the 'fullname' field, to prevent malicious SQL code execution. If possible, modify the application code to use parameterized queries or prepared statements to eliminate SQL injection risks. Fourth, monitor database logs and application logs for suspicious queries or unusual activity related to visitor data. Fifth, prepare an incident response plan to quickly address any signs of exploitation. Lastly, engage with PHPGurukul or the software vendor to obtain patches or updates as soon as they become available and plan for immediate deployment.