CVE-2025-5704 is a critical SQL Injection vulnerability identified in version 1.0 of the code-projects Real Estate Property Management System. The vulnerability exists in the /Admin/User.php file, specifically through the manipulation of the txtUserName parameter. An attacker can exploit this flaw remotely without any authentication or user interaction, by injecting malicious SQL code into the input field. This can lead to unauthorized access to the backend database, allowing attackers to read, modify, or delete sensitive data stored within the system. The vulnerability is classified with a CVSS 4.0 base score of 6.9, indicating a medium severity level, primarily due to limited impact on confidentiality, integrity, and availability, and no requirement for privileges or user interaction. However, the exploitability is high given the network attack vector and low attack complexity. The vulnerability affects only version 1.0 of the product, and no official patches or mitigations have been published yet. Although no known exploits are currently observed in the wild, the public disclosure of the vulnerability increases the risk of exploitation by threat actors. The Real Estate Property Management System is typically used by real estate agencies and property managers to handle client data, property listings, and transactions, making the confidentiality and integrity of the database critical to business operations and compliance with data protection regulations.

For European organizations, this vulnerability poses significant risks due to the sensitive nature of real estate data, which often includes personal identifiable information (PII), financial details, and contractual documents. Exploitation could lead to data breaches, resulting in regulatory penalties under GDPR, reputational damage, and financial losses. Unauthorized database access could also enable attackers to manipulate property listings or client information, potentially disrupting business operations and trust. Since the vulnerability can be exploited remotely without authentication, attackers could target exposed management interfaces over the internet. This threat is particularly concerning for small to medium-sized real estate firms that may lack robust cybersecurity defenses or timely patch management processes. Additionally, the absence of patches means organizations must rely on alternative mitigations to reduce exposure. The medium CVSS score suggests that while the impact is serious, it may not lead to full system compromise or widespread availability disruption, but the confidentiality and integrity impacts remain critical for compliance and operational continuity.

Given the lack of official patches, European organizations using this system should implement immediate compensating controls. These include restricting access to the /Admin/User.php endpoint through network segmentation and firewall rules, allowing only trusted IP addresses or VPN connections. Input validation and sanitization should be enforced at the web application firewall (WAF) level to detect and block SQL injection payloads targeting the txtUserName parameter. Organizations should conduct thorough code reviews and consider applying custom patches or parameterized queries to eliminate injection points if source code access is available. Monitoring and logging of all access to the administration interface should be enhanced to detect suspicious activities promptly. Regular backups of the database should be maintained to enable recovery in case of data tampering. Finally, organizations should plan for an upgrade or migration to a patched or alternative property management system as soon as a fix becomes available.