CVE-2025-12226 identifies a SQL Injection vulnerability in the SourceCodester Best House Rental Management System version 1.0, specifically within the save_house function of the /admin_class.php file. The vulnerability arises from improper validation and sanitization of the house_no parameter, which is directly used in SQL queries. An attacker with high privileges can remotely manipulate this parameter to inject malicious SQL commands, potentially allowing unauthorized access to or modification of the backend database. The vulnerability does not require user interaction but does require the attacker to have some level of authenticated access (high privileges). The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:H means high privileges required), no user interaction (UI:N), and low impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Although no known exploits are currently active in the wild, the public availability of exploit code increases the risk of exploitation. The vulnerability affects only version 1.0 of the product, which is a niche rental management system commonly used by small to medium property management firms. The lack of official patches or updates at the time of publication means organizations must implement manual mitigations or code fixes to address the issue.

For European organizations using the SourceCodester Best House Rental Management System 1.0, this vulnerability poses a moderate risk. Exploitation could lead to unauthorized disclosure of sensitive rental data, alteration or deletion of property records, and potential disruption of rental management operations. This could result in financial losses, reputational damage, and regulatory non-compliance, especially under GDPR due to potential exposure of personal data. The requirement for high privileges limits the attack surface to insiders or compromised accounts, but the remote exploitability increases the risk if credential theft occurs. Organizations in the real estate and property management sectors are particularly vulnerable, as they rely heavily on accurate and secure management of rental information. The medium severity rating reflects the balance between the potential impact and the exploitation complexity.

To mitigate CVE-2025-12226, organizations should: 1) Immediately review and restrict access controls to ensure only trusted administrators have high-level privileges required to exploit this vulnerability. 2) Implement input validation and parameterized queries or prepared statements in the save_house function to sanitize the house_no parameter and prevent SQL injection. 3) Conduct a thorough code audit of the entire application to identify and remediate similar injection flaws. 4) Monitor logs for suspicious database queries or unusual administrative activity that could indicate exploitation attempts. 5) If possible, isolate the rental management system behind additional security layers such as web application firewalls (WAFs) configured to detect and block SQL injection patterns. 6) Engage with the vendor or community to obtain patches or updates addressing this vulnerability. 7) Educate administrative users on secure credential management to reduce the risk of account compromise. 8) Regularly back up databases to enable recovery in case of data tampering or loss.