CVE-2025-5003 is a SQL Injection vulnerability identified in version 1.0 of the projectworlds Online Time Table Generator, specifically within the /semester_ajax.php file. The vulnerability arises from improper sanitization or validation of the 'ID' parameter, which can be manipulated by an attacker to inject malicious SQL code. This flaw allows an unauthenticated remote attacker to execute arbitrary SQL queries on the backend database without requiring any user interaction. The injection can lead to unauthorized data access, data modification, or even deletion, potentially compromising the confidentiality, integrity, and availability of the affected system's data. Although the CVSS 4.0 score is 6.9 (medium severity), the vulnerability is critical in nature because SQL injection can be leveraged for a wide range of attacks including data exfiltration and privilege escalation. No patches have been published yet, and there are no known exploits in the wild, but the exploit details have been publicly disclosed, increasing the risk of exploitation by opportunistic attackers. The vulnerability does not require authentication or user interaction, making it easier to exploit remotely. The lack of scope change indicates the impact is limited to the vulnerable component and its database. Given the nature of the product—a time table generator used likely in educational or organizational contexts—successful exploitation could disrupt scheduling operations and expose sensitive user or organizational data.

For European organizations, especially educational institutions or businesses using the projectworlds Online Time Table Generator, this vulnerability poses a significant risk. Exploitation could lead to unauthorized disclosure of sensitive scheduling data, personal information of students or employees, and internal organizational details. This could result in operational disruptions, loss of trust, and potential regulatory penalties under GDPR due to data breaches. The ability to remotely exploit the vulnerability without authentication increases the attack surface, potentially allowing attackers to compromise multiple systems if the software is widely deployed. Additionally, attackers could manipulate timetable data, causing confusion and operational inefficiencies. The medium CVSS score may underestimate the real-world impact, as SQL injection vulnerabilities often serve as entry points for more severe attacks such as ransomware or lateral movement within networks. European organizations with limited cybersecurity resources or delayed patching processes are particularly vulnerable to exploitation.

1. Immediate code review and sanitization: Developers should audit the /semester_ajax.php file to ensure all input parameters, especially 'ID', are properly sanitized and validated using parameterized queries or prepared statements to prevent SQL injection. 2. Apply patches or updates: Monitor the vendor's announcements for official patches and apply them promptly once available. 3. Web Application Firewall (WAF): Deploy and configure a WAF with rules to detect and block SQL injection attempts targeting the vulnerable endpoint. 4. Network segmentation: Isolate the time table generator system from critical internal networks to limit potential lateral movement in case of compromise. 5. Access controls: Restrict access to the application to trusted IP ranges or VPN users where feasible to reduce exposure. 6. Monitoring and logging: Enable detailed logging of web requests and database queries to detect suspicious activities early. 7. Incident response preparedness: Prepare to respond quickly to any signs of exploitation, including data breach notifications and forensic analysis. 8. User awareness: Inform administrators and users about the vulnerability and encourage vigilance against suspicious system behavior.