CVE-2025-14090 identifies a SQL injection vulnerability in version 1.0 of the AMTT Hotel Broadband Operation System, specifically within the /manager/card/cardmake_down.php script. The vulnerability arises from improper sanitization of the 'ID' parameter, which an attacker can manipulate to inject arbitrary SQL commands. This flaw allows remote exploitation without user interaction but requires high privileges, indicating that an attacker must already have some level of authenticated access to the system. The injection can lead to unauthorized data access, modification, or deletion, impacting the confidentiality, integrity, and availability of the backend database. The vendor was notified early but has not issued any patches or advisories, and no known exploits are currently active in the wild. The CVSS 4.0 vector indicates network attack vector, low complexity, no user interaction, and no privileges required for attack execution, but the presence of 'PR:H' (privileges required: high) suggests that exploitation is limited to users with elevated access. The vulnerability affects a critical component managing broadband access cards in hotel environments, potentially allowing attackers to manipulate user access or disrupt service. Given the public disclosure and lack of vendor response, the risk of exploitation may increase over time.

For European organizations, particularly those in the hospitality sector using AMTT Hotel Broadband Operation System 1.0, this vulnerability poses a risk to the confidentiality and integrity of customer and operational data. Attackers with high privileges could exploit the SQL injection to extract sensitive information, alter broadband access controls, or disrupt network services, leading to service outages or data breaches. This could result in reputational damage, regulatory penalties under GDPR for data exposure, and operational downtime. The impact is heightened in large hotel chains or resorts where broadband access management is critical for guest services. Additionally, compromised broadband systems could serve as pivot points for further network intrusion. The lack of vendor patches increases exposure duration, necessitating proactive defensive measures. While the vulnerability requires high privileges, insider threats or compromised credentials could facilitate exploitation, making internal security controls vital.

1. Implement strict input validation and parameterized queries in the affected application component to prevent SQL injection. 2. Restrict access to the /manager/card/cardmake_down.php endpoint using network segmentation and firewall rules, limiting it to trusted administrative networks only. 3. Enforce strong authentication and role-based access controls to minimize the number of users with high privileges. 4. Monitor logs and network traffic for unusual queries or access patterns indicative of SQL injection attempts. 5. Conduct regular security audits and penetration testing focused on web application vulnerabilities. 6. If possible, isolate the broadband operation system from other critical infrastructure to contain potential breaches. 7. Engage with the vendor for patch development or consider alternative solutions if remediation is delayed. 8. Educate internal staff about the risks of privilege misuse and enforce strict credential management policies.