CVE-2026-25895 in FUXA
Summary
by MITRE • 02/10/2026
FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. A path traversal vulnerability in FUXA allows an unauthenticated, remote attacker to write arbitrary files to arbitrary locations on the server filesystem. 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 • 05/22/2026
The vulnerability identified as CVE-2026-25895 represents a critical path traversal flaw within FUXA, a web-based process visualization platform commonly deployed in industrial control systems environments. This software serves as a SCADA/HMI/dashboard solution that provides web-based interfaces for monitoring and controlling industrial processes. The vulnerability specifically affects versions of FUXA up to and including version 1.2.9, creating a significant security risk for organizations relying on this visualization software for critical infrastructure operations. The flaw allows unauthenticated remote attackers to exploit the system's file handling mechanisms and write arbitrary files to any location within the server's filesystem, fundamentally compromising the integrity and security of the affected systems.
This path traversal vulnerability stems from inadequate input validation and improper file path handling within the FUXA application's web interface. The technical implementation appears to lack proper sanitization of user-supplied file paths, enabling attackers to manipulate the application's file operations through crafted requests. When an attacker sends malicious input that includes directory traversal sequences such as "../", the application fails to properly validate or restrict these paths, allowing the system to interpret and execute the requests against arbitrary filesystem locations. This flaw directly maps to CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The vulnerability's remote nature eliminates the need for physical access or local credentials, making it particularly dangerous in industrial environments where network connectivity is essential for system operation.
The operational impact of this vulnerability extends beyond simple unauthorized file creation, as it provides attackers with the capability to establish persistent access points, deploy malicious code, or manipulate critical system files. In industrial control environments, this could lead to severe consequences including system compromise, data manipulation, process disruption, or even physical safety hazards. Attackers could potentially overwrite configuration files, inject malicious code into the visualization system, or create backdoor access mechanisms that persist across system reboots. The unauthenticated nature of the attack means that any remote user with access to the FUXA web interface can exploit this vulnerability without requiring valid credentials, significantly expanding the attack surface and reducing the effectiveness of traditional authentication-based security controls. This vulnerability particularly affects the integrity and availability aspects of the CIA triad, potentially causing both data corruption and system unavailability.
Organizations utilizing FUXA in industrial environments should prioritize immediate remediation through the deployment of version 1.2.10, which contains the necessary patches to address this path traversal vulnerability. The fix implemented in the updated version likely includes proper input validation, enhanced file path sanitization, and restrictions on directory traversal operations within the application's file handling mechanisms. Security teams should conduct comprehensive vulnerability assessments to identify any potential exploitation attempts and verify the integrity of affected systems. Additionally, implementing network segmentation, access controls, and monitoring solutions can provide additional layers of defense. The vulnerability highlights the importance of secure coding practices and input validation in industrial control systems, where the consequences of security flaws can extend far beyond traditional information technology environments into physical infrastructure safety and operational continuity. This case demonstrates the critical need for regular security updates and proper vulnerability management in industrial environments, where the stakes of system compromise are significantly higher than typical enterprise environments. The ATT&CK framework would categorize this vulnerability under techniques related to privilege escalation and persistence, as attackers could leverage the ability to write arbitrary files to establish long-term access and control over industrial systems.