CVE-2026-43947

frangoteam · FUXA

FUXA contains an incorrect authorization vulnerability that allows unauthenticated attackers to bypass security restrictions.

Executive summary

An incorrect authorization flaw in FUXA allows unauthenticated attackers to bypass security controls and gain unauthorized access.

Vulnerability

The software fails to properly enforce authorization checks, permitting unauthenticated attackers to perform actions that should be restricted to authorized users.

Business impact

Unauthorized access to a SCADA or HMI dashboard can result in the loss of confidentiality and integrity regarding industrial processes. With a CVSS score of 8.9, this vulnerability presents a critical risk to the security posture of any environment utilizing the affected software.

Remediation

Immediate Action: Update the fuxa-server component to version 1.3.1 or later.

Proactive Monitoring: Review application-level access logs for unexpected administrative actions performed by unauthenticated or low-privilege sessions.

Compensating Controls: Implement strict network segmentation to restrict access to the FUXA interface to trusted internal networks only.

Exploitation status

Public Exploit Available: No

Analyst recommendation

Given the potential for unauthorized access to sensitive control systems, administrators should treat this update as urgent. Applying the patch to version 1.3.1 is the only reliable method to remediate the authorization deficiency.