CVE-2025-7521 is a critical SQL Injection vulnerability identified in version 1.13 of the PHPGurukul Vehicle Parking Management System, specifically within an unknown function in the /admin/index.php file. The vulnerability arises from improper sanitization or validation of the 'Username' argument, which can be manipulated by an attacker to inject malicious SQL code. This flaw allows remote attackers to execute arbitrary SQL queries on the backend database without requiring authentication or user interaction. The vulnerability is remotely exploitable over the network, increasing its risk profile. The disclosed exploit enables attackers to potentially extract sensitive data, modify or delete records, or escalate privileges within the affected system. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the network attack vector, low attack complexity, no privileges or user interaction required, and limited impact on confidentiality, integrity, and availability. However, the classification as critical in the description suggests that in practical scenarios, the impact could be more severe depending on the database contents and system usage. The vulnerability affects only version 1.13 of the product, and no official patches or mitigations have been published yet. No known exploits are currently observed in the wild, but public disclosure of the exploit code increases the risk of imminent attacks. The vulnerability is significant because vehicle parking management systems often handle sensitive user data, including personal identification and payment information, and may be integrated with broader organizational infrastructure, making them attractive targets for attackers seeking data theft or disruption.

For European organizations using PHPGurukul Vehicle Parking Management System version 1.13, this vulnerability poses a substantial risk to data confidentiality and system integrity. Exploitation could lead to unauthorized access to sensitive customer data, including personal and payment information, potentially violating GDPR requirements and resulting in legal and financial penalties. The ability to execute arbitrary SQL commands remotely without authentication could also allow attackers to manipulate or delete critical operational data, disrupting parking management services and causing reputational damage. Additionally, if the system is integrated with other enterprise applications or networks, the vulnerability could serve as a pivot point for lateral movement and broader compromise. Given the critical nature of infrastructure management systems in urban environments, successful exploitation could impact service availability and public safety. The medium CVSS score may underestimate the real-world impact, especially if the system stores or processes sensitive or regulated data. Organizations in sectors such as municipal services, transportation, and facility management are particularly at risk.

To mitigate this vulnerability, European organizations should immediately audit their use of PHPGurukul Vehicle Parking Management System and identify any installations running version 1.13. Since no official patch is currently available, organizations should implement the following specific measures: 1) Apply Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the 'Username' parameter in /admin/index.php. 2) Restrict network access to the administrative interface by IP whitelisting or VPN-only access to reduce exposure to remote attacks. 3) Conduct thorough input validation and parameterized query implementation in the affected code if source code access is available, to sanitize the 'Username' input properly. 4) Monitor database logs and application logs for unusual query patterns or failed login attempts that may indicate exploitation attempts. 5) Prepare for rapid patch deployment once an official fix is released by the vendor. 6) Consider isolating the parking management system from critical internal networks to limit potential lateral movement. 7) Educate administrative users about the risk and encourage strong authentication practices, even though the vulnerability does not require authentication, to reduce overall attack surface.