CVE-2025-4358 is a critical SQL Injection vulnerability identified in version 2.0 of the PHPGurukul Company Visitor Management System, specifically within the /admin-profile.php file. The vulnerability arises from improper sanitization and validation of user-supplied input parameters, namely 'adminname' and 'mobilenumber'. These parameters are directly used in SQL queries without adequate escaping or parameterization, allowing an attacker to inject malicious SQL code. The vulnerability can be exploited remotely without requiring authentication or user interaction, making it highly accessible to attackers. Successful exploitation could allow an attacker to manipulate the backend database, potentially leading to unauthorized data disclosure, data modification, or deletion. The CVSS 4.0 base score is 6.9, indicating a medium severity level, with attack vector being network (remote), low attack complexity, no privileges or user interaction required, and limited impact on confidentiality, integrity, and availability. Although no known exploits are currently reported in the wild, the public disclosure of the vulnerability increases the risk of exploitation. The lack of available patches or mitigations from the vendor at the time of publication further exacerbates the threat. Given that visitor management systems often store sensitive personal and organizational data, exploitation could lead to significant data breaches and operational disruptions.

For European organizations using PHPGurukul Company Visitor Management System 2.0, this vulnerability poses a significant risk to the confidentiality and integrity of sensitive visitor and administrative data. Exploitation could lead to unauthorized access to personal identifiable information (PII), visitor logs, and potentially internal administrative credentials. This could result in privacy violations under GDPR regulations, leading to legal and financial penalties. Additionally, attackers could alter or delete records, disrupting visitor management operations and potentially causing reputational damage. Since the vulnerability can be exploited remotely without authentication, attackers could leverage it to gain a foothold within the network, potentially pivoting to other critical systems. The medium CVSS score suggests a moderate impact, but the critical classification and ease of exploitation elevate the urgency for mitigation. European organizations with high visitor traffic or those in regulated sectors such as finance, healthcare, or government are particularly at risk due to the sensitivity of the data handled.

1. Immediate mitigation should include restricting external access to the /admin-profile.php endpoint via network-level controls such as firewalls or VPNs, limiting exposure to trusted internal networks only. 2. Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the vulnerable parameters 'adminname' and 'mobilenumber'. 3. Conduct a thorough code review and refactor the affected code to use parameterized queries or prepared statements, eliminating direct concatenation of user inputs in SQL commands. 4. Apply input validation and sanitization on all user-supplied data, enforcing strict type and format checks. 5. Monitor logs for suspicious query patterns or repeated failed attempts targeting the vulnerable parameters. 6. Engage with the vendor or community to obtain or develop patches and update the system to a secure version once available. 7. Educate administrators on the risks and ensure strong access controls and credential management to reduce the impact of potential exploitation. 8. As a longer-term measure, consider migrating to more secure visitor management solutions with active security maintenance and support.