ABB Cylon FLXeon 9.3.4 (cmds.js) Authenticated Root Remote Code Execution
Title: ABB Cylon FLXeon 9.3.4 (cmds.js) Authenticated Root Remote Code Execution
Advisory ID: ZSL-2025-5908
Type: Local/Remote
Impact: System Access, DoS
Risk: (5/5)
Release Date: 02.02.2025
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.
CBX Series (FLX Series)
CBT Series
CBV Series
Firmware: <=9.3.4
Linux Kernel 4.15.13
NodeJS/8.4.0
Express
[22.04.2024] Vendor contacted.
[22.04.2024] Vendor responds.
[02.05.2024] Working with the vendor.
[20.01.2025] Vendor releases version 9.3.5 to address this issue.
[02.02.2025] Coordinated public security advisory released.
[2] https://www.cve.org/CVERecord?id=CVE-2024-48841
[3] https://packetstorm.news/files/id/188961/
[03.02.2025] - Added reference [3]
Web: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk
Advisory ID: ZSL-2025-5908
Type: Local/Remote
Impact: System Access, DoS
Risk: (5/5)
Release Date: 02.02.2025
Summary
BACnet® Smart Building Controllers. ABB's BACnet portfolio features a series of BACnet® IP and BACnet MS/TP field controllers for ASPECT® and INTEGRA™ 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.
Description
The ABB Cylon FLXeon BAS controller is vulnerable to authenticated root command execution via the cmds API. An authenticated attacker can execute arbitrary system commands with root privileges.Vendor
ABB Ltd. - https://www.global.abbAffected Version
FLXeon Series (FBXi Series, FBTi Series, FBVi Series)CBX Series (FLX Series)
CBT Series
CBV Series
Firmware: <=9.3.4
Tested On
Linux Kernel 5.4.27Linux Kernel 4.15.13
NodeJS/8.4.0
Express
Vendor Status
[21.04.2024] Vulnerability discovered.[22.04.2024] Vendor contacted.
[22.04.2024] Vendor responds.
[02.05.2024] Working with the vendor.
[20.01.2025] Vendor releases version 9.3.5 to address this issue.
[02.02.2025] Coordinated public security advisory released.
PoC
cmdsapi.pyCredits
Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>References
[1] https://search.abb.com/library/Download.aspx?DocumentID=9AKK108470A5684&LanguageCode=en&DocumentPartId=PDF&Action=Launch[2] https://www.cve.org/CVERecord?id=CVE-2024-48841
[3] https://packetstorm.news/files/id/188961/
Changelog
[02.02.2025] - Initial release[03.02.2025] - Added reference [3]
Contact
Zero Science LabWeb: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk
