CVE-2026-25751 identifies a critical security flaw in frangoteam's FUXA software, a web-based platform used for process visualization in SCADA, HMI, and dashboard applications. The vulnerability arises from missing authentication on a critical function that exposes administrative database credentials without requiring any user authentication or interaction. Specifically, an unauthenticated remote attacker can retrieve the full system configuration, including sensitive InfluxDB administrative credentials. This allows the attacker to directly authenticate to the InfluxDB service, enabling unauthorized reading, modification, or deletion of all historical process data. Additionally, the attacker can corrupt the database, causing denial of service conditions that disrupt industrial monitoring and control operations. The root cause is a lack of proper access controls (CWE-306) combined with information disclosure (CWE-312). The vulnerability affects all FUXA versions prior to 1.2.10, which has addressed the issue. The CVSS 4.0 base score of 9.1 reflects network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality and integrity. While no active exploitation has been reported, the potential for severe operational disruption and data compromise in industrial environments is significant.

For European organizations, particularly those in manufacturing, energy, utilities, and critical infrastructure sectors that utilize FUXA for process visualization and control, this vulnerability poses a significant risk. Unauthorized access to InfluxDB administrative credentials can lead to full compromise of historical process data integrity and availability, undermining operational reliability and safety. Attackers could manipulate process data to cause incorrect system behavior or disrupt monitoring, potentially leading to physical damage or safety incidents. The ability to delete or corrupt data also impacts forensic investigations and compliance with regulatory requirements such as NIS2 and GDPR. Given the criticality of industrial control systems in Europe’s economy and infrastructure, exploitation could result in substantial financial losses, reputational damage, and regulatory penalties. The vulnerability’s ease of exploitation without authentication increases the threat level, especially in environments where FUXA instances are exposed or insufficiently segmented from external networks.

European organizations should immediately upgrade all FUXA installations to version 1.2.10 or later, where this vulnerability is patched. Until upgrades are completed, organizations should restrict network access to FUXA interfaces by implementing strict firewall rules and network segmentation to isolate SCADA/HMI systems from untrusted networks, including the internet. Employing VPNs or zero-trust network access solutions for remote connectivity can further reduce exposure. Monitoring and logging access to FUXA and InfluxDB services should be enhanced to detect anomalous activities indicative of credential theft or unauthorized database access. Additionally, organizations should rotate InfluxDB administrative credentials after patching to invalidate any potentially compromised secrets. Conducting regular vulnerability assessments and penetration tests focused on industrial control systems can help identify residual risks. Finally, integrating FUXA and InfluxDB into broader industrial cybersecurity frameworks and incident response plans will improve preparedness against exploitation attempts.