CVE-2025-7129 is a critical SQL Injection vulnerability identified in version 1.0 of the Campcodes Payroll Management System. The vulnerability arises from improper sanitization of the 'ID' parameter in the /ajax.php endpoint when the 'action=delete_employee_attendance_single' is invoked. This flaw allows an unauthenticated remote attacker to inject malicious SQL code through the 'ID' parameter, potentially manipulating the backend database queries. Exploiting this vulnerability could enable attackers to read, modify, or delete sensitive payroll and employee attendance data, or escalate their privileges within the system. The vulnerability does not require any authentication or user interaction, making it highly accessible for exploitation. Although the CVSS 4.0 base score is 6.9 (medium severity), the potential impact on confidentiality, integrity, and availability of payroll data is significant, especially given the critical nature of payroll systems in organizational operations. No official patches or mitigations have been published yet, and while no known exploits are currently observed in the wild, the public disclosure of the vulnerability increases the risk of exploitation.

For European organizations using Campcodes Payroll Management System 1.0, this vulnerability poses a substantial risk to the confidentiality and integrity of sensitive employee and payroll data. Successful exploitation could lead to unauthorized disclosure of personal and financial information, manipulation of attendance records, and disruption of payroll processing. This can result in financial losses, regulatory non-compliance (e.g., GDPR violations), reputational damage, and operational downtime. Given the critical role payroll systems play, any compromise could also affect employee trust and lead to legal liabilities. The remote and unauthenticated nature of the exploit increases the threat level, as attackers do not need insider access or user interaction to launch attacks.

European organizations should immediately assess their exposure to Campcodes Payroll Management System 1.0 and restrict access to the vulnerable /ajax.php endpoint via network-level controls such as firewalls or web application firewalls (WAFs) with rules to detect and block SQL injection patterns targeting the 'ID' parameter. Implement input validation and parameterized queries in the application code to prevent injection attacks once patches become available. Until an official patch is released, consider isolating the payroll system from direct internet access and enforce strict access controls and monitoring for unusual database queries or application behavior. Regularly audit logs for suspicious activity related to employee attendance deletion requests. Additionally, organizations should prepare incident response plans specific to payroll system compromises and ensure backups of payroll data are current and securely stored to enable recovery if data integrity is affected.