frangoteam FUXA up to 1.2.9 Heartbeat Refresh API improper authorization

Summaryinfo

A vulnerability, which was classified as critical, has been found in frangoteam FUXA up to 1.2.9. Affected by this vulnerability is an unknown functionality of the component Heartbeat Refresh API. The manipulation leads to improper authorization. This vulnerability is traded as CVE-2026-25893. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in frangoteam FUXA up to 1.2.9. It has been rated as critical. This issue affects an unknown functionality of the component Heartbeat Refresh API. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. Prior to 1.2.10, an authentication bypass vulnerability in FUXA allows an unauthenticated, remote attacker to gain administrative access via the heartbeat refresh API and execute arbitrary code on the server. This issue has been patched in FUXA version 1.2.10.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-25893 since 02/06/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 1.2.10 eliminates this vulnerability. Applying the patch fe82348d160904d0013b9a3e267d50158f5c7afb is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• frangoteam

Name

• FUXA

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8
• 1.2.9

License

• open-source

Website

• Product: https://github.com/frangoteam/FUXA/

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