CVE-2025-9420 is a SQL Injection vulnerability identified in version 1.0 of the itsourcecode Apartment Management System, specifically within the /floor/addfloor.php file. The vulnerability arises from improper sanitization or validation of the 'hdnid' parameter, which is susceptible to malicious input manipulation. An attacker can exploit this flaw remotely without requiring authentication or user interaction, by crafting specially designed requests that inject SQL commands into the backend database query. This can lead to unauthorized data access, data modification, or potentially full compromise of the database. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the ease of remote exploitation (no privileges or user interaction needed) but limited scope and impact on confidentiality, integrity, and availability (each rated low). No official patches or fixes have been published yet, and although no known exploits are currently observed in the wild, the availability of a public exploit increases the risk of exploitation. The vulnerability affects only version 1.0 of the product, which is a niche apartment management system likely used by property management firms or real estate companies to handle floor and apartment data. The lack of authentication requirement and remote exploitability make this a significant risk for organizations using this software, as attackers could extract sensitive tenant or property data or alter records, potentially disrupting operations or violating data protection regulations.

For European organizations using the itsourcecode Apartment Management System 1.0, this vulnerability poses a risk to the confidentiality and integrity of tenant and property data. Unauthorized access to the database could lead to exposure of personally identifiable information (PII) of residents, violating GDPR requirements and resulting in legal and financial penalties. Data manipulation could disrupt property management operations, causing financial losses and reputational damage. Although the CVSS score is medium, the fact that exploitation requires no authentication and can be performed remotely increases the threat level. Organizations in Europe that rely on this software for managing apartment data should consider the potential impact on data privacy compliance and operational continuity. The absence of patches means that affected organizations remain exposed until mitigations or updates are applied.

Given the absence of official patches, European organizations should implement immediate compensating controls. These include: 1) Restricting network access to the Apartment Management System, limiting it to trusted internal networks or VPNs to reduce exposure to remote attackers. 2) Employing Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting the 'hdnid' parameter. 3) Conducting thorough input validation and sanitization at the application level if source code access is available, especially for the vulnerable parameter. 4) Monitoring logs for suspicious activity related to /floor/addfloor.php and unusual database queries. 5) Planning for an upgrade or migration to a patched or alternative system once available. 6) Educating staff about the risks and ensuring backups of critical data are maintained to enable recovery in case of compromise.