CVE-2026-25752 in FUXA
Summary
by MITRE • 02/06/2026
FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. An authorization bypass vulnerability in FUXA allows an unauthenticated, remote attacker to modify device tags via WebSockets. Exploitation allows an unauthenticated, remote attacker to bypass role-based access controls and overwrite arbitrary device tags or disable communication drivers, exposing connected ICS/SCADA environments to follow-on actions. This may allow an attacker to manipulate physical processes and disconnected devices from the HMI. This affects FUXA through version 1.2.9. This issue has been patched in FUXA version 1.2.10.
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Analysis
by VulDB Data Team • 02/10/2026
The vulnerability identified as CVE-2026-25752 represents a critical authorization bypass flaw within FUXA, a widely used web-based process visualization software that serves as a SCADA/HMI/dashboard solution for industrial control systems. This software operates as a critical interface between human operators and industrial processes, making it a prime target for adversaries seeking to compromise industrial environments. The vulnerability specifically affects versions of FUXA through 1.2.9, creating a significant risk for organizations operating industrial control systems that rely on this platform for monitoring and control operations. The flaw manifests through the WebSockets communication channel, which is essential for real-time data exchange between the HMI interface and industrial devices, making the attack surface particularly concerning for operational technology environments.
The technical implementation of this vulnerability stems from insufficient authentication checks within the WebSocket endpoint handlers that manage device tag modifications. An attacker can exploit this weakness by establishing a direct WebSocket connection to the FUXA server without proper authentication credentials, thereby circumventing the established role-based access control mechanisms. This authorization bypass allows remote attackers to perform arbitrary modifications to device tags, disable communication drivers, or manipulate the underlying industrial processes that depend on these tags for proper operation. The vulnerability's impact extends beyond simple data modification, as it enables attackers to disrupt communication between the HMI and connected devices, potentially causing cascading failures in industrial processes. The flaw demonstrates a classic weakness in access control implementation where the system fails to validate user credentials before permitting critical operations, aligning with CWE-285, which addresses improper authorization in software systems.
The operational implications of this vulnerability are severe for industrial environments that depend on FUXA for process monitoring and control. An attacker who successfully exploits this vulnerability can manipulate physical processes in real-time, potentially causing equipment damage, production downtime, or safety hazards in critical infrastructure sectors. The ability to disable communication drivers creates additional attack vectors that could isolate critical systems or prevent operators from accessing essential monitoring information. This vulnerability particularly threatens organizations using FUXA in manufacturing, energy, water treatment, and other industrial sectors where process control reliability is paramount. The remote nature of the attack means that adversaries can exploit this vulnerability from outside the organization's network perimeter, making traditional network security controls insufficient to prevent exploitation. According to ATT&CK framework, this vulnerability maps to T1078.004 (Valid Accounts: Cloud Accounts) and T1566.001 (Phishing: Spearphishing Attachment) as attackers could potentially leverage compromised credentials or initial access vectors to establish persistent control over the industrial environment.
Organizations utilizing FUXA should immediately implement mitigations to address this vulnerability, with the most effective solution being the upgrade to version 1.2.10 or later, which contains the necessary patches to prevent unauthorized access. Network segmentation and firewall rules should be implemented to restrict access to FUXA WebSocket endpoints, particularly from untrusted networks. Additional defensive measures include implementing robust authentication mechanisms, enabling network monitoring for unusual WebSocket traffic patterns, and conducting regular security assessments of industrial control system interfaces. The vulnerability highlights the importance of securing industrial web applications and demonstrates the need for proper access control implementation in operational technology environments. Security teams should also consider implementing intrusion detection systems specifically configured to monitor for WebSocket-based attacks and establish incident response procedures for potential exploitation of industrial control system vulnerabilities. Regular security updates and patch management processes must be strengthened to ensure industrial environments remain protected against similar authorization bypass vulnerabilities in other software components.