CVE-2025-6160 is a critical SQL Injection vulnerability identified in SourceCodester Client Database Management System version 1.0. The vulnerability arises from improper sanitization and validation of the 'user_id' parameter in the /user_customer_create_order.php endpoint. An attacker can remotely manipulate this parameter to inject malicious SQL code, potentially allowing unauthorized access to the underlying database. This could lead to unauthorized data disclosure, data modification, or even deletion, depending on the database permissions. The vulnerability requires no authentication or user interaction, making it exploitable over the network by any unauthenticated attacker. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the network attack vector, low attack complexity, no privileges required, and no user interaction needed. The impact on confidentiality, integrity, and availability is rated as low individually but combined can be significant depending on the database content and configuration. No official patches or mitigations have been published yet, and no known exploits are currently observed in the wild, although public exploit details have been disclosed, increasing the risk of exploitation.

For European organizations using SourceCodester Client Database Management System 1.0, this vulnerability poses a significant risk to the confidentiality and integrity of client and order data. Exploitation could lead to unauthorized access to sensitive customer information, financial data, or internal business records, potentially resulting in data breaches, regulatory non-compliance (e.g., GDPR violations), reputational damage, and financial losses. The ability to remotely exploit without authentication increases the threat level, especially for internet-facing deployments. Additionally, manipulation of order data could disrupt business operations or enable fraudulent transactions. Organizations in sectors such as retail, finance, and customer service that rely on this product for client order management are particularly at risk. The absence of patches means organizations must rely on immediate mitigation strategies to reduce exposure.

1. Immediate implementation of Web Application Firewalls (WAFs) with custom rules to detect and block malicious SQL injection payloads targeting the 'user_id' parameter in /user_customer_create_order.php. 2. Restrict network access to the vulnerable endpoint by limiting exposure to trusted internal networks or VPNs only. 3. Conduct thorough input validation and sanitization on all user-supplied data, especially 'user_id', using parameterized queries or prepared statements to prevent injection. 4. Monitor logs for unusual database query patterns or repeated access attempts to the vulnerable endpoint. 5. If possible, disable or restrict the vulnerable functionality until a vendor patch is available. 6. Engage with SourceCodester or community forums to obtain or develop patches or updates. 7. Perform regular backups of databases to enable recovery in case of data tampering or loss. 8. Educate developers and administrators on secure coding practices to prevent similar vulnerabilities in future releases.