View CSAF Summary Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to enumerate all user accounts and role assignments on a FUXA SCADA/HMI instance. The following versions of Frangoteam FUXA SCADA/HMI are affected:
FUXA SCADA/HMI <=1.3.1 (CVE-2026-13207)
CVSS Vendor Equipment Vulnerabilities
v3 7.5 Frangoteam Frangoteam FUXA SCADA/HMI Authentication Bypass by Spoofing
Background
Critical Infrastructure Sectors: Critical Manufacturing, Energy, Water and Wastewater Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland
Vulnerabilities
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CVE-2026-13207
FUXA versions 1.3.1 and prior contain an authentication bypass vulnerability via dot-segment path normalization in the REST API. The API router fails to normalize dot-segment sequences before applying authentication middleware, allowing unauthenticated requests to access protected endpoints by prefixing paths with dot-segments such as /api/./users, /api/./roles, and /api/project/../users. These requests bypass authentication checks and return sensitive user and role data without credentials. View CVE Details
Affected Products Frangoteam FUXA SCADA/HMI
Vendor:Frangoteam Product Version:Frangoteam FUXA SCADA/HMI: <=1.3.1 Product Status:known_affected
Remediations MitigationFrangoteam recommends users apply the latest version of FUXA 1.3.2 or later https://github.com/frangoteam/FUXA/releases.https://github.com/frangoteam/FUXA/releases
Relevant CWE: CWE-290 Authentication Bypass by Spoofing
Metrics
CVSS Version Base Score Base Severity Vector String
3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 8.7 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Acknowledgments
Joshua Hayes of Cited Relevance LLC reported this vulnerability to CISA
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Recommended Practices CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. CISA also recommends users take the following measures to protect themselves from social engineering attacks: Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.
Revision History
Initial Release Date: 2026-06-30
Date Revision Summary
2026-06-30 1 Initial Publication
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