Schneider Electric Security Notification
EcoStruxureTM Control Expert, EcoStruxureTM Process Expert, andModicon Controllers M580 and M340
9 August 2022 (13 August 2024)

Overview
Schneider Electric is aware of a vulnerability in its EcoStruxure™ Control Expert ,EcoStruxure™ Process Expert, and Modicon M580 and M340 control products.
Failure to apply the remediations provided below may risk a bypass of access controls in place,which could result in the possibility of arbitrary code execution and loss of confidentiality andintegrity of the project file.
August 2024 Update: A remediation is available for the Modicon M580 CPU Safety (page 2).

Affected Products and Versions
ProductVersion

EcoStruxure™ Control Expert Including all Unity Pro versions (formername of EcoStruxure™ Control Expert)

v15.0 SP1 and prior

EcoStruxure™ Process Expert,
Including all versions of EcoStruxure™ Hybrid DCS (former name ofEcoStruxure™ Process Expert)

Prior to v2021

Modicon M340 CPU (part numbers BMXP34*)

v3.40 and prior

Modicon M580 CPU (part numbers BMEP* and BMEH*, excluding
M580 CPU Safety)

v3.20 and prior

Modicon M580 CPU Safety (part numbers BMEP58*S andBMEH58*S)

Versions prior toSV4.21

Vulnerability Details
CVE ID: CVE-2022-37300
CVSS v3.1 Base Score 9.8 | Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-640: Weak Password Recovery Mechanism for Forgotten Password vulnerability
exists that could cause unauthorized access in read and write mode to the controller whencommunicating over Modbus.

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Remediation
Affected Product & Version
EcoStruxure™ Control
Expert Including all UnityPro versions (former nameof EcoStruxure™ ControlExpert)
Versions prior v15.1

Remediation
EcoStruxure™ Control Expert v15.1, available for download
below, includes a fix for this vulnerability:
https://www.se.com/us/en/product-range/548-ecostruxurecontrol-expert-software/ - software-and-firmware

EcoStruxure™ ProcessExpert,
Including all versions ofEcoStruxure™ Hybrid
DCS (former name ofEcoStruxure™ ProcessExpert)
Versions prior to v2021

EcoStruxure™ Process Expert v2021, available for download
below, includes a fix for this vulnerability:
https://www.se.com/ww/en/product-range/65406-ecostruxureprocess-expert/ - software-and-firmware

Modicon M340 CPU (partnumbers BMXP34*)
Versions prior to v3.50

Firmware v3.50 includes a fix for this vulnerability and isavailable for download here:
https://www.se.com/ww/en/download/document/BMXP34xxxxx_SV_03.50/

Modicon M580 CPU (partnumbers BMEP* andBMEH*, excluding M580
CPU Safety)
Versions prior to SV4.10

Modicon M580 CPU
Safety (part numbers
BMEP58*S andBMEH58*S)
Versions prior to SV4.21

Firmware SV4.10 includes a fix for this vulnerability and isavailable for download here:
https://www.se.com/ww/en/download/document/BMEx58x0x0_
SV04.10/
Firmware SV04.21 includes a fix for this vulnerability and isavailable for download here:
https://www.se.com/ww/en/product-range/62098-modiconm580-pac-controller/#software-and-firmware
Important: customer needs to use version of EcoStruxure™
Control Expert V16.0 HF001 minimum to connect with thelatest version of M580 CPU Safety. The software is available
for download here:
https://www.se.com/ww/en/product-range/548-ecostruxurecontrol-expert-unity-pro/#software-and-firmware

Customers should use appropriate patching methodologies when applying these patches totheir systems. We strongly recommend the use of back-ups and evaluating the impact of these

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patches in a Test and Development environment or on an offline infrastructure. Contact
Schneider Electric’s Customer Care Center if you need assistance removing a patch.
If customers choose not to apply the remediation provided above, they should immediately
apply the mitigations available in the mitigation section below.
Affected ProductMitigations•••

Modicon Modicon M340
CPU (part numbersBMXP34*)
Versions prior to v3.50••

Modicon M580 CPU (partnumbers BMEP* andBMEH*, excluding M580
CPU Safety)
Versions prior to SV4.10•

Modicon M580 CPUSafety (BMEP58*S andBMEH58*S)
Versions prior to SV4.21•

Setup an application password in the project properties.
Setup network segmentation and implement a firewall toblock all unauthorized access to port 502/TCP.
Configure the Access Control List following therecommendations of the user manuals:o “Modicon M580, Hardware, Reference Manual”:
https://www.se.com/ww/en/download/document/
EIO0000001578/
o “Modicon M340 for Ethernet Communications
Modules and Processors User Manual” inchapter “Messaging Configuration Parameters”:
https://www.se.com/ww/en/download/document/3
1007131K01000/
Setup a secure communication according to thefollowing guideline “Modicon Controllers Platform Cyber
Security Reference Manual,” in chapter “Setup securedcommunications”:
https://www.se.com/ww/en/download/document/EIO0000001999/
Use a BMENUA0100 module and follow the instructions
to configure IPSEC feature as described in the chapter“Configuring the BMENUA0100 Cybersecurity Settings”:
https://www.se.com/ww/en/download/document/PHA833
50
Use a BMENOC module and follow the instructions toconfigure IPSEC feature as described in the guideline“Modicon M580 - BMENOC03.1 Ethernet
Communications Schneider Electric Security Notification
Module, Installation and Configuration Guide” in thechapter “Configuring IPSEC communications”:
https://www.se.com/ww/en/download/document/HRB626
65/
Ensure the M580 CPU is running with the memory
protection activated by configuring the input bit to aphysical input, for more details refer to the following

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guideline “Modicon Controllers. Platform Cyber Security
Reference Manual”, “CPU Memory Protection section”:
https://www.schneiderelectric.com/en/download/document/EIO0000001999/
o NOTE: The CPU memory protection cannot be
configured with Hot Standby CPUs. In suchcases, use IPsec encrypted communication
To further reduce the attack surface on Modicon M580 CPU
Safety:• Ensure the CPU is running in Safety mode andmaintenance input is configured to maintain this Safetymode during operation – refer to the document Modicon
M580 - Safety System Planning Guide - in the chapter“Operating Mode Transitions”:
https://www.se.com/ww/en/download/document/QGH60
283/•
EcoStruxure™ ControlExpert
Versions prior to v15.1••

EcoStruxure™ ProcessExpert
Versions prior to v2021

•
•
•

•

Setup a VPN between the Modicon PLC controllers andthe engineering workstation containing EcoStruxureControl Expert or Process Expert. Note: this functionality
may be provided by an external IPSEC compatiblefirewall located close to the controller.
Store the project files in a secure storage and restrict theaccess to only trusted users
When exchanging files over the network, use securecommunication protocols
Encrypt project files when stored
Only open project files received from trusted source
Compute a hash of the project files and regularly checkthe consistency of this hash to verify the integrity before
usage
Harden the workstation running EcoStruxure™ Control
Expert and EcoStruxure™ Process Expert

General Security Recommendations
We strongly recommend the following industry cybersecurity best practices.
• Locate control and safety system networks and remote devices behind firewalls andisolate them from the business network.

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Schneider Electric Security Notification••
•
••
•
•

Install physical controls so no unauthorized personnel can access your industrial control
and safety systems, components, peripheral equipment, and networks.
Place all controllers in locked cabinets and never leave them in the “Program” mode.
Never connect programming software to any network other than the network intended forthat device.
Scan all methods of mobile data exchange with the isolated network such as CDs, USBdrives, etc. before use in the terminals or any node connected to these networks.
Never allow mobile devices that have connected to any other network besides theintended network to connect to the safety or control networks without proper sanitation.
Minimize network exposure for all control system devices and systems and ensure thatthey are not accessible from the Internet.
When remote access is required, use secure methods, such as Virtual Private Networks(VPNs). Recognize that VPNs may have vulnerabilities and should be updated to themost current version available. Also, understand that VPNs are only as secure as theconnected devices.

For more information refer to the Schneider Electric Recommended Cybersecurity Best
Practices document.

Acknowledgements
Schneider Electric recognizes the following researcher for identifying and helping to coordinate
a response to this vulnerability:
CVE

Researcher

CVE-2022-37300

GAO Jin (NSFocus)

For More Information
This document provides an overview of the identified vulnerability or vulnerabilities and actions
required to mitigate. For more details and assistance on how to protect your installation, contact
your local Schneider Electric representative or Schneider Electric Industrial Cybersecurity
Services: https://www.se.com/ww/en/work/solutions/cybersecurity/. These organizations will befully aware of this situation and can support you through the process.
For further information related to cybersecurity in Schneider Electric’s products, visit thecompany’s cybersecurity support portal page:https://www.se.com/ww/en/work/support/cybersecurity/overview.jsp
LEGAL DISCLAIMER
THIS NOTIFICATION DOCUMENT, THE INFORMATION CONTAINED HEREIN, AND ANY
MATERIALS LINKED FROM IT (COLLECTIVELY, THIS “NOTIFICATION”) ARE INTENDED TOHELP PROVIDE AN OVERVIEW OF THE IDENTIFIED SITUATION AND SUGGESTEDMITIGATIONACTIONS,REMEDIATION,FIX,AND/OR
GENERALSECURITY
RECOMMENDATIONS AND IS PROVIDED ON AN “AS-IS” BASIS WITHOUT WARRANTY OR

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Schneider Electric Security Notification
GUARANTEE OF ANY KIND. SCHNEIDER ELECTRIC DISCLAIMS ALL WARRANTIESRELATING TO THIS NOTIFICATION, EITHER EXPRESS OR IMPLIED, INCLUDINGWARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
SCHNEIDER ELECTRIC MAKES NO WARRANTY THAT THE NOTIFICATION WILL RESOLVETHE IDENTIFIED SITUATION. IN NO EVENT SHALL SCHNEIDER ELECTRIC BE LIABLE FORANY DAMAGES OR LOSSES WHATSOEVER IN CONNECTION WITH THIS NOTIFICATION,INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESSPROFITS OR SPECIAL DAMAGES, EVEN IF SCHNEIDER ELECTRIC HAS BEEN ADVISEDOF THE POSSIBILITY OF SUCH DAMAGES. YOUR USE OF THIS NOTIFICATION IS AT YOUROWN RISK, AND YOU ARE SOLELY LIABLE FOR ANY DAMAGES TO YOUR SYSTEMS ORASSETS OR OTHER LOSSES THAT MAY RESULT FROM YOUR USE OF THISNOTIFICATION. SCHNEIDER ELECTRIC RESERVES THE RIGHT TO UPDATE OR CHANGE
THIS NOTIFICATION AT ANY TIME AND IN ITS SOLE DISCRETION.
About Schneider Electric
Schneider’s purpose is to empower all to make the most of our energy and resources, bridging progress andsustainability for all. We call this Life Is On.
Our mission is to be your digital partner for Sustainability and Efficiency.
We drive digital transformation by integrating world-leading process and energy technologies, end-point to cloudconnecting products, controls, software and services, across the entire lifecycle, enabling integrated company
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We are the most local of global companies. We are advocates of open standards and partnership ecosystems thatare passionate about our shared Meaningful Purpose, Inclusive and Empowered values.
www.se.com

Revision Control:
Version 1.0.0
09 August 2022

Original Release

Version 1.1.0
06 September 2022

The version number for Modicon M580 thataddresses these vulnerabilities has been updated
from sv4.01 to sv4.02.

Version 2.0.0
11 October 2022

A clarification was added to the list of affected
products by splitting Modicon M580 and Modicon
M580 Safety CPU ranges. The purpose of thenotification update is to inform customers that thelatest fix Modicon M580 sv4.02 does not apply to
the Safety range of M580. It is highly
recommended that customers using Modicon
M580 Safety ranges continue to implement themitigations shared in this document.

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Schneider Electric Security Notification

Version 3.0.0
13 December 2022

The Modicon M580 sv4.02 firmware has been
retracted for quality issues and is no longer
available for download. Additional mitigations havebeen introduced for Modicon M580 CPU andM580 CPU Safety, and we urge customers todeploy these mitigations to further reduce the riskof potential exploitation of identified vulnerabilities.

Version 4.0.0
14 March 2023

Remediation for the Modicon M580 CPU isavailable for download.

Version 5.0.013 August 2024

A remediation is available for the Modicon M580
CPU Safety (page 2).

CPCERT

Digitally signed by CPCERT
Date: 2024.08.12 12:33:01 -04'00'

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