CVE-2025-9592 is a SQL Injection vulnerability identified in version 1.0 of the itsourcecode Apartment Management System. The vulnerability resides in the /report/bill_info.php file, specifically in the processing of the 'vid' parameter. By manipulating this argument, an attacker can inject malicious SQL code, which the system executes without proper sanitization or parameterization. This flaw allows remote attackers to execute arbitrary SQL commands on the backend database without requiring authentication or user interaction. The vulnerability has a CVSS 4.0 base score of 6.9, indicating a medium severity level. The attack vector is network-based (remote), with low attack complexity and no privileges or user interaction needed. The impact affects confidentiality, integrity, and availability at a low level, meaning attackers could potentially read, modify, or disrupt data but with some limitations. Although no public exploits are currently known to be actively used in the wild, the exploit code is publicly available, increasing the risk of exploitation. The vulnerability's root cause is insufficient input validation and lack of prepared statements or parameterized queries in the affected PHP script, which is a common and critical security oversight in web applications that interact with databases.

For European organizations using the itsourcecode Apartment Management System version 1.0, this vulnerability poses a significant risk to the confidentiality and integrity of tenant and billing data. Successful exploitation could lead to unauthorized disclosure of sensitive personal and financial information, manipulation of billing records, or denial of service through database corruption or disruption. Given that apartment management systems often store personally identifiable information (PII) and payment details, a breach could result in regulatory non-compliance under GDPR, leading to legal penalties and reputational damage. Additionally, attackers could leverage this vulnerability as a foothold to pivot into broader internal networks if the system is connected to other enterprise resources. The remote and unauthenticated nature of the exploit increases the threat level, especially for organizations that expose the affected system to the internet without adequate network segmentation or web application firewalls.

To mitigate this vulnerability, organizations should immediately apply patches or updates provided by itsourcecode once available. In the absence of official patches, temporary mitigations include implementing web application firewalls (WAFs) with rules specifically designed to detect and block SQL injection attempts targeting the 'vid' parameter in /report/bill_info.php. Code-level remediation involves refactoring the affected PHP script to use parameterized queries or prepared statements to safely handle user inputs. Input validation should be enforced to accept only expected data types and formats for the 'vid' parameter. Network-level controls such as restricting access to the apartment management system to trusted internal IPs and disabling unnecessary external access can reduce exposure. Regular security assessments and penetration testing should be conducted to verify the effectiveness of mitigations. Additionally, monitoring logs for unusual database queries or errors related to SQL injection attempts can provide early detection of exploitation attempts.