CVE-2025-4739 is a critical SQL Injection vulnerability identified in version 1.0 of the projectworlds Hospital Database Management System, specifically affecting the /medicines_info.php file. The vulnerability arises from improper sanitization or validation of the Med_ID parameter, which is used in SQL queries. An attacker can remotely exploit this flaw without any authentication or user interaction by manipulating the Med_ID argument to inject malicious SQL code. This can lead to unauthorized access to the backend database, allowing attackers to read, modify, or delete sensitive hospital data such as patient records, medicine inventories, or other critical healthcare information. The vulnerability has been publicly disclosed, increasing the risk of exploitation, although no known active exploits have been reported in the wild yet. The CVSS 4.0 base score is 6.9, indicating a medium severity level, reflecting the ease of remote exploitation without privileges but with limited impact on confidentiality, integrity, and availability. However, given the critical nature of healthcare data and the potential for cascading effects on hospital operations, the actual risk could be higher in practice. The vulnerability does not require user interaction or privileges, making it easier for attackers to exploit. The lack of a patch or mitigation guidance in the provided information suggests that affected organizations need to implement immediate compensating controls to reduce risk until an official fix is available.

For European healthcare organizations using the projectworlds Hospital Database Management System version 1.0, this vulnerability poses a significant risk to the confidentiality and integrity of sensitive patient and operational data. Successful exploitation could lead to unauthorized disclosure of personal health information, violating GDPR regulations and resulting in severe legal and financial penalties. Additionally, attackers could alter or delete critical medical data, potentially disrupting patient care and hospital workflows. The availability of hospital services could also be indirectly impacted if database integrity is compromised, leading to downtime or degraded performance. Given the critical role of healthcare infrastructure, exploitation could undermine trust in healthcare providers and cause reputational damage. Furthermore, the remote and unauthenticated nature of the attack vector increases the likelihood of exploitation attempts, especially as the vulnerability details are publicly available. European hospitals and healthcare providers must consider this threat seriously, as it could also be leveraged as part of broader cyberattacks targeting critical infrastructure.

1. Immediate network-level controls: Restrict external access to the Hospital Database Management System, especially the /medicines_info.php endpoint, using firewalls or web application firewalls (WAFs) with rules to detect and block SQL injection patterns targeting the Med_ID parameter. 2. Input validation and sanitization: Implement strict server-side validation and sanitization of all input parameters, particularly Med_ID, to ensure only expected data types and formats are accepted. 3. Use of parameterized queries or prepared statements: Modify the application code to use parameterized queries to prevent SQL injection attacks. 4. Monitoring and logging: Enable detailed logging of database queries and web requests to detect anomalous activities indicative of SQL injection attempts. 5. Incident response readiness: Prepare for potential exploitation by having an incident response plan tailored to healthcare data breaches, including notification procedures compliant with GDPR. 6. Vendor engagement: Contact projectworlds for official patches or updates and apply them promptly once available. 7. Segmentation: Isolate the hospital database system from other critical network segments to limit lateral movement in case of compromise. 8. Regular security assessments: Conduct penetration testing and code reviews focusing on injection vulnerabilities to identify and remediate similar issues proactively.