CVE-2025-7536 is a critical SQL Injection vulnerability identified in version 1.0 of the Campcodes Sales and Inventory System, specifically within the /pages/receipt_credit.php file. The vulnerability arises from improper sanitization or validation of the 'sid' parameter, which is susceptible to malicious input manipulation. An attacker can exploit this flaw remotely without requiring authentication or user interaction, enabling them to inject arbitrary SQL commands into the backend database queries. This can lead to unauthorized data access, data modification, or even complete compromise of the database integrity and confidentiality. The CVSS 4.0 base score is 6.9, indicating a medium severity level, factoring in the ease of exploitation (network attack vector, no privileges or user interaction required) but limited impact on confidentiality, integrity, and availability (each rated low to medium). Although no known exploits are currently reported in the wild, the public disclosure of the vulnerability increases the risk of exploitation by threat actors. The lack of available patches or mitigation guidance from the vendor further exacerbates the risk for organizations relying on this system. Given that sales and inventory systems often contain sensitive business and customer data, exploitation could lead to significant operational disruption and data breaches.

For European organizations using Campcodes Sales and Inventory System 1.0, this vulnerability poses a substantial risk to business continuity and data security. Successful exploitation could allow attackers to access or manipulate sales records, inventory data, and potentially sensitive customer information, leading to financial losses, reputational damage, and regulatory non-compliance, especially under GDPR requirements. The ability to launch attacks remotely without authentication increases the attack surface, making organizations vulnerable to external threat actors. Disruption of inventory and sales processes could impair supply chain operations and customer service. Additionally, unauthorized data disclosure could trigger mandatory breach notifications and legal consequences. The medium severity rating suggests that while the impact is significant, it may not lead to full system compromise or widespread availability loss, but the risk remains critical for organizations with high dependency on this software.

Organizations should immediately assess their exposure to Campcodes Sales and Inventory System version 1.0 and prioritize upgrading to a patched version once available. In the absence of official patches, implement strict input validation and sanitization on the 'sid' parameter at the web application firewall (WAF) or reverse proxy level to block malicious SQL payloads. Employ parameterized queries or prepared statements if custom code modifications are possible. Conduct thorough code reviews and penetration testing focused on SQL injection vectors. Restrict database user permissions to the minimum necessary to limit the impact of potential injection attacks. Monitor logs for suspicious query patterns or repeated access attempts to /pages/receipt_credit.php with unusual 'sid' values. Segregate the sales and inventory system network segment to reduce exposure. Finally, develop an incident response plan tailored to SQL injection attacks to enable rapid containment and remediation.