CVE-2025-6961 is a critical SQL Injection vulnerability identified in version 1.0 of the Campcodes Employee Management System, specifically within the /mark.php file. The vulnerability arises due to improper sanitization or validation of the 'ID' parameter, which an attacker can manipulate to inject malicious SQL code. This flaw allows remote attackers to execute arbitrary SQL commands on the backend database without requiring authentication or user interaction. The CVSS 4.0 base score is 6.9, reflecting a medium severity rating, primarily because while the attack vector is network-based and requires no privileges or user interaction, the impact on confidentiality, integrity, and availability is limited to low levels. The vulnerability could potentially allow attackers to read, modify, or delete sensitive employee data, or escalate their access within the system. Although no public exploits are currently known to be actively used in the wild, the disclosure of the exploit code increases the risk of exploitation. The lack of available patches or vendor advisories at this time further exacerbates the threat. Given that employee management systems typically store sensitive personal and organizational data, this vulnerability poses a significant risk to data confidentiality and system integrity.

For European organizations using Campcodes Employee Management System 1.0, this vulnerability could lead to unauthorized access to employee records, including personal identification information, payroll data, and performance evaluations. Such data breaches could result in regulatory non-compliance, particularly under GDPR, leading to substantial fines and reputational damage. Additionally, attackers could manipulate or delete critical employee data, disrupting HR operations and potentially causing operational downtime. The ability to execute arbitrary SQL commands remotely without authentication increases the risk of widespread exploitation, especially if the system is exposed to the internet or poorly segmented within internal networks. The medium CVSS score suggests that while the vulnerability is serious, the overall impact might be somewhat contained if compensating controls are in place. However, the public disclosure of the exploit code raises the likelihood of targeted attacks against European entities, especially those with limited cybersecurity defenses or outdated software management practices.

European organizations should immediately assess their exposure to Campcodes Employee Management System version 1.0, particularly instances accessible over the network. In the absence of an official patch, organizations should implement strict input validation and parameterized queries within the application code if source code access is available. Network-level mitigations include restricting access to the /mark.php endpoint via firewall rules or web application firewalls (WAFs) configured to detect and block SQL injection patterns. Monitoring and logging of database queries and application logs should be enhanced to detect suspicious activities indicative of SQL injection attempts. Organizations should also conduct thorough audits of their employee management systems to identify and isolate vulnerable instances. If feasible, migrating to a newer, patched version or alternative software solutions should be prioritized. Additionally, organizations must ensure that backups of critical employee data are current and securely stored to enable recovery in case of data tampering or deletion.