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## https://sploitus.com/exploit?id=ZSL-2025-5923
<html><body><p>ABB Cylon FLXeon 9.3.4 Unauthenticated Dashboard Access


Vendor: ABB Ltd.
Product web page: https://www.global.abb                   
Affected version: FLXeon Series (FBXi Series, FBTi Series, FBVi Series)
                  CBX Series (FLX Series)
                  CBT Series
                  CBV Series
                  Firmware: &lt;=9.3.4

Summary: BACnetยฎ Smart Building Controllers. ABB's BACnet portfolio features a
series of BACnetยฎ IP and BACnet MS/TP field controllers for ASPECTยฎ and INTEGRAโ„ข
building management solutions. ABB BACnet controllers are designed for intelligent
control of HVAC equipment such as central plant, boilers, chillers, cooling towers,
heat pump systems, air handling units (constant volume, variable air volume, and
multi-zone), rooftop units, electrical systems such as lighting control, variable
frequency drives and metering.

The FLXeon Controller Series uses BACnet/IP standards to deliver unprecedented
connectivity and open integration for your building automation systems. It's scalable,
and modular, allowing you to control a diverse range of HVAC functions.

Desc: A vulnerability exists in the ABB Cylon FLXeon controller that allows unauthenticated
access to the Building Management System (BMS) or Building Automation System (BAS) dashboard.
This exposes sensitive information, including system status, events, and alarms related
to HVAC operations. Additionally, an attacker could manipulate environmental controls
such as temperature settings, potentially disrupting building climate regulation and
operational safety.

Tested on: Linux Kernel 5.4.27
           Linux Kernel 4.15.13
           NodeJS/8.4.0
           Express


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2025-5923
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2025-5923.php


21.04.2024

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