CVE-2025-7220 is a SQL Injection vulnerability identified in version 1.0 of the Campcodes Payroll Management System. The vulnerability exists in the /ajax.php endpoint, specifically when handling the 'action=save_deductions' request parameter. The issue arises from improper sanitization or validation of the 'ID' argument, which allows an attacker to inject malicious SQL code. This injection can be exploited remotely without requiring authentication or user interaction, making it accessible to unauthenticated attackers over the network. The vulnerability has been publicly disclosed, increasing the risk of exploitation, although no known exploits are currently reported in the wild. The CVSS 4.0 base score is 6.9, indicating a medium severity level. The vector details highlight that the attack vector is network-based (AV:N), requires no privileges (PR:N), no user interaction (UI:N), and has partial impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). The scope remains unchanged (S:N). The vulnerability allows attackers to manipulate payroll deduction data, potentially leading to unauthorized data access, data corruption, or disruption of payroll processing. Given the critical nature of payroll systems in managing sensitive employee financial data, exploitation could have significant operational and privacy implications.

For European organizations using Campcodes Payroll Management System 1.0, this vulnerability poses a significant risk to the confidentiality and integrity of employee payroll data. Attackers could extract sensitive information such as salary details, tax information, and personal identifiers, leading to privacy violations and potential regulatory non-compliance under GDPR. Additionally, manipulation of payroll deductions could result in financial discrepancies, affecting employee trust and organizational reputation. The availability impact, while partial, could disrupt payroll operations, causing delays in salary payments and administrative overhead. Given the remote and unauthenticated nature of the exploit, attackers could target multiple organizations en masse, increasing the risk of widespread data breaches. The public disclosure of the vulnerability further elevates the threat landscape, as it enables attackers to develop and deploy exploits rapidly. European organizations must consider the legal and financial consequences of such breaches, including fines and remediation costs.

1. Immediate application of patches or updates from Campcodes once available is critical; organizations should monitor vendor communications closely. 2. In the absence of an official patch, implement web application firewall (WAF) rules to detect and block SQL injection patterns targeting the /ajax.php?action=save_deductions endpoint, focusing on the 'ID' parameter. 3. Conduct thorough input validation and sanitization on all user-supplied data, especially parameters influencing database queries. 4. Employ parameterized queries or prepared statements in the application code to prevent SQL injection. 5. Restrict network access to the payroll management system to trusted IP ranges and enforce strong network segmentation to limit exposure. 6. Monitor logs for unusual database query patterns or repeated failed attempts to exploit the vulnerability. 7. Conduct security audits and penetration testing focused on injection flaws to identify and remediate similar vulnerabilities. 8. Educate IT and security teams about the vulnerability and ensure incident response plans are updated to handle potential exploitation scenarios.