{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "We strongly recommend the following industry cybersecurity best practices.\n\n* Locate control and safety system networks and remote devices behind firewalls and isolate them from the business network.\n* Install physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.\n* Place all controllers in locked cabinets and never leave them in the \u201cProgram\u201d mode.\n* Never connect programming software to any network other than the network intended for that device.\n* Scan all methods of mobile data exchange with the isolated network such as CDs, USB drives, etc. before use in the terminals or any node connected to these networks.\n* Never allow mobile devices that have connected to any other network besides the intended network to connect to the safety or control networks without proper sanitation.\n* Minimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.\n* 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 the most current version available. Also, understand that VPNs are only as secure as the connected devices.\n\nFor more information refer to the Schneider Electric [Recommended Cybersecurity Best Practices](https://www.se.com/us/en/download/document/7EN52-0390/) document.",
        "title": "General Security Recommendations"
      },
      {
        "category": "general",
        "text": "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 be fully aware of this situation and can support you through the process.\n\nFor further information related to cybersecurity in Schneider Electric\u0027s products, visit the company\u0027s cybersecurity support portal page: https://www.se.com/ww/en/work/support/cybersecurity/overview.jsp",
        "title": "For More Information"
      },
      {
        "category": "legal_disclaimer",
        "text": "THIS NOTIFICATION DOCUMENT, THE INFORMATION CONTAINED HEREIN, AND ANY MATERIALS LINKED FROM IT (COLLECTIVELY, THIS \u201cNOTIFICATION\u201d) ARE INTENDED TO HELP PROVIDE AN OVERVIEW OF THE IDENTIFIED SITUATION AND SUGGESTED MITIGATION ACTIONS, REMEDIATION, FIX, AND/OR GENERAL SECURITY RECOMMENDATIONS AND IS PROVIDED ON AN \u201cAS-IS\u201d BASIS WITHOUT WARRANTY OR GUARANTEE OF ANY KIND.  SCHNEIDER ELECTRIC DISCLAIMS ALL WARRANTIES RELATING TO THIS NOTIFICATION, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. SCHNEIDER ELECTRIC MAKES NO WARRANTY THAT THE NOTIFICATION WILL RESOLVE THE IDENTIFIED SITUATION. IN NO EVENT SHALL SCHNEIDER ELECTRIC BE LIABLE FOR ANY DAMAGES OR LOSSES WHATSOEVER IN CONNECTION WITH THIS NOTIFICATION, INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF SCHNEIDER ELECTRIC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. YOUR USE OF THIS NOTIFICATION IS AT YOUR OWN RISK, AND YOU ARE SOLELY LIABLE FOR ANY DAMAGES TO YOUR SYSTEMS OR ASSETS OR OTHER LOSSES THAT MAY RESULT FROM YOUR USE OF THIS NOTIFICATION. SCHNEIDER ELECTRIC RESERVES THE RIGHT TO UPDATE OR CHANGE THIS NOTIFICATION AT ANY TIME AND IN ITS SOLE DISCRETION",
        "title": "LEGAL DISCLAIMER"
      },
      {
        "category": "general",
        "text": "Schneider\u0027s purpose is to create Impact by empowering all to make the most of our energy and resources, bridging progress and\r\nsustainability for all. We call this Life Is On.\n\nOur mission is to be the trusted partner in Sustainability and Efficiency.\n\nWe are a global industrial technology leader bringing world-leading expertise in electrification, automation and digitization to smart\r\nindustries, resilient infrastructure, future-proof data centers, intelligent buildings, and intuitive homes. Anchored by our deep\r\ndomain expertise, we provide integrated end-to-end lifecycle AI enabled Industrial IoT solutions with connected products, automation,\r\nsoftware and services, delivering digital twins to enable profitable growth for our customers.\n\nWe are a people company with an ecosystem of 150,000 colleagues and more than a million partners operating in over 100 countries\r\nto ensure proximity to our customers and stakeholders. We embrace diversity and inclusion in everything we do, guided by our\r\nmeaningful purpose of a sustainable future for all. \n\n www.se.com",
        "title": "About Schneider Electric"
      },
      {
        "category": "summary",
        "text": "Schneider Electric is aware of multiple vulnerabilities in its Modicon Controllers M340 / Momentum / MC80 / EcoStruxure\u2122 Control Expert products. [Modicon PAC](https://www.se.com/ww/en/product-subcategory/3950-pac-programmable-automation-controllers/?filter=business-1-industrial-automation-and-control) products control and monitor industrial operations. [EcoStruxure\u2122 Control Expert](https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#overview) is the engineering application for Modicon Controllers. Failure to apply the provided remediations/mitigations below may risk unauthorized access to the controller, which could result in the possibility of denial of service and loss of confidentiality, integrity of the controller.",
        "title": "Overview"
      },
      {
        "category": "other",
        "text": "The severity of vulnerabilities was calculated using the CVSS Base metrics for 4.0 ([CVSS v4.0](https://www.first.org/cvss/calculator/4.0)). CVSS v3.1 \nwill be still evaluated until the adoption of CVSS v4.0 by the industry. The severity was calculated without \nincorporating the Temporal and Environmental metrics. Schneider Electric recommends that customers score the CVSS Environmental metrics, which are specific to end-user organizations, and consider factors such as \nthe presence of mitigations in that environment. Environmental metrics may refine the relative severity posed by the vulnerabilities described in this document within a customer\u0027s environment."
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "cpcert@se.com",
      "name": "Schneider Electric CPCERT",
      "namespace": "https://www.se.com/ww/en/work/support/cybersecurity/security-notifications.jsp"
    },
    "references": [
      {
        "category": "self",
        "summary": "Modicon Controllers M340 / Momentum / MC80 - SEVD-2024-317-02  PDF Version",
        "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2024-317-02\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=SEVD-2024-317-02.pdf"
      },
      {
        "category": "self",
        "summary": "Modicon Controllers M340 / Momentum / MC80 - SEVD-2024-317-02  CSAF Version",
        "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2024-317-02\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=sevd-2024-317-02.json"
      },
      {
        "category": "external",
        "summary": "Recommended Cybersecurity Best Practices",
        "url": "https://www.se.com/ww/en/download/document/7EN52-0390/"
      }
    ],
    "title": "Modicon Controllers M340 / Momentum / MC80 \u0026 EcoStruxure\u2122 Control Expert",
    "tracking": {
      "current_release_date": "2026-04-14T07:00:00.000Z",
      "generator": {
        "date": "2026-04-13T13:44:18.950Z",
        "engine": {
          "name": "Schneider Electric CSAF Generator",
          "version": "1.2"
        }
      },
      "id": "SEVD-2024-317-02",
      "initial_release_date": "2024-11-12T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2024-11-12T00:00:00.000Z",
          "number": "1.0.0",
          "summary": "Original Release"
        },
        {
          "date": "2026-04-14T07:00:00.000Z",
          "number": "2.0.0",
          "summary": "EcoStruxure\u2122 Control Expert is added as affected offer and remediations are \navailable for Modicon M340, EcoStruxure\u2122 Control Expert, Modicon Momentum."
        }
      ],
      "status": "final",
      "version": "2.0.0"
    }
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Artem Zinenko"
          ],
          "organization": "Kaspersky"
        },
        {
          "names": [
            "Amir Zaltzman"
          ],
          "organization": "Tel Aviv University"
        }
      ],
      "cve": "CVE-2024-8933",
      "cwe": {
        "id": "CWE-924",
        "name": "Improper Enforcement of Message Integrity During Transmission in a Communication Channel"
      },
      "notes": [
        {
          "category": "description",
          "text": "CWE-924: Improper Enforcement of Message Integrity During Transmission in a Communication Channel \r\nvulnerability exists that could cause retrieval of password hash that could lead to denial of service and loss of \r\nconfidentiality and integrity of controllers. To be successful, the attacker needs to inject themself inside the \r\nlogical network while a valid user uploads or downloads a project file into the controller.",
          "title": "CVE Description"
        },
        {
          "category": "details",
          "text": "CVSS v4.0 Base Score 7.5 | High | [CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N](https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)",
          "title": "CVSS v4.0 Score"
        }
      ],
      "product_status": {
        "fixed": [
          "14",
          "17",
          "11"
        ],
        "known_affected": [
          "12",
          "15",
          "16",
          "10"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Firmware SV2.90 includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/535-modicon-momentum/#software-and-firmware Important: Customer needs to use version of EcoStruxure\u2122 Control Expert v16.2 HF003 minimum to connect with the latest version of Modicon Momentum.",
          "product_ids": [
            "16"
          ],
          "restart_required": {
            "category": "system"
          },
          "url": "https://www.se.com/ww/en/product-range/535-modicon-momentum/#software-and-firmware"
        },
        {
          "category": "vendor_fix",
          "details": "EcoStruxure\u2122 Control Expert V16.2 HF003 includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#software-and-firmware",
          "product_ids": [
            "10"
          ],
          "url": "https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#software-and-firmware"
        },
        {
          "category": "vendor_fix",
          "details": "Version 3.70 of Modicon M340 includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/1468-modicon-m340/#software-and-firmware",
          "product_ids": [
            "12"
          ],
          "restart_required": {
            "category": "system"
          },
          "url": "https://www.se.com/ww/en/product-range/1468-modicon-m340/#software-and-firmware"
        },
        {
          "category": "mitigation",
          "details": "Customers should immediately apply the following mitigations to reduce the risk of exploit: \u2022 Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP \u2022 Configure the Access Control List following the recommendations of the user manuals: \u201cModicon M340 for Ethernet Communications Modules and Processors User Manual\u201d in chapter \u201cMessaging Configuration Parameters\u201d: https://www.se.com/ww/en/download/document/31007131K01000/ \u2022 Consider use of external firewall devices such as EAGLE40-07 from Belden to establish VPN connections. For more details refer to \u201cModicon Controller Systems Cybersecurity, User Guide\u201d: https://www.se.com/ww/en/download/document/EIO0000001999/ \u2022 Ensure the M340 CPU is running with the memory protection activated by configuring the input bit to a physical input, for more details refer to the following guideline \u201cModicon Controller Systems Cybersecurity, User Guide\u201d chapter \u201cControler Memory Protection\u201d:  https://www.se.com/ww/en/download/document/EIO0000001999/ ",
          "product_ids": [
            "12"
          ],
          "url": "https://www.se.com/ww/en/download/document/31007131K01000/"
        },
        {
          "category": "mitigation",
          "details": "Schneider Electric is establishing a remediation plan for all future versions of Modicon MC80 that will include a fix for CVE-2024-8933. We will update this document when the remediation is available. Until then, customers should immediately apply the following mitigations to reduce the risk of exploit: \u2022 Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP  \u2022 Configure the Access Control List following the recommendations of the user manuals: \u201cMC80 Programmable Logic Controller(PLC), User Manual\u201d in the section \u201cAccess Control List (ACL)\u201d: https://www.se.com/ww/en/download/document/EIO0000002071/    \u2022 Consider use of external firewall devices such as EAGLE40-07 from Belden to establish VPN connections. For more details refer to \u201cModicon Controller Systems Cybersecurity, User Guide\u201d: https://www.se.com/ww/en/download/document/EIO0000001999/",
          "product_ids": [
            "15"
          ],
          "url": "https://www.se.com/ww/en/download/document/EIO0000002071/"
        },
        {
          "category": "mitigation",
          "details": "Customers should immediately apply the following mitigations to reduce the risk of exploit: \u2022 Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP  \u2022 Configure the Access Control List following the recommendations of the user manuals: \u201cMomentum for EcoStruxure\u2122 Control Expert - 171CBU78090, 171CBU98090, 171CBU98091 Processors, User Guide\u201d in the section \u201cControlling Access\u201d: https://www.se.com/ww/en/download/document/HRB44124/ \u2022 Consider use of external firewall devices such as EAGLE40-07 from Belden to establish VPN connections. For more details refer to \u201cModicon Controller Systems Cybersecurity, User Guide\u201d: https://www.se.com/ww/en/download/document/EIO0000001999/ ",
          "product_ids": [
            "16",
            "10"
          ],
          "url": "https://www.se.com/ww/en/download/document/HRB44124/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "12",
            "15",
            "16",
            "10"
          ]
        }
      ],
      "title": "CVE-2024-8933"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Amir Zaltzman"
          ],
          "organization": "Tel Aviv University"
        }
      ],
      "cve": "CVE-2024-8935",
      "cwe": {
        "id": "CWE-290",
        "name": "Authentication Bypass by Spoofing"
      },
      "notes": [
        {
          "category": "description",
          "text": "CWE-290: Authentication Bypass by Spoofing vulnerability exists that could cause a denial of service and loss \r\nof confidentiality and integrity of controllers when conducting a Man-In-The-Middle attack between the \r\ncontroller and the engineering workstation while a valid user is establishing a communication session. This \r\nvulnerability is inherent to Diffie Hellman algorithm which does not protect against Man-In-The-Middle attacks.",
          "title": "CVE Description"
        },
        {
          "category": "details",
          "text": "CVSS v4.0 Base Score 7.7 | High | [CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N](https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)",
          "title": "CVSS v4.0 Score"
        }
      ],
      "product_status": {
        "fixed": [
          "14",
          "11"
        ],
        "known_affected": [
          "13",
          "10"
        ],
        "known_not_affected": [
          "15",
          "16",
          "19"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "EcoStruxure\u2122 Control Expert V16.2 HF003 includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#software-and-firmware",
          "product_ids": [
            "10"
          ],
          "url": "https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#software-and-firmware"
        },
        {
          "category": "vendor_fix",
          "details": "Version 3.70 of Modicon M340 includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/1468-modicon-m340/#software-and-firmware",
          "product_ids": [
            "13"
          ],
          "restart_required": {
            "category": "system"
          },
          "url": "https://www.se.com/ww/en/product-range/1468-modicon-m340/#software-and-firmware"
        },
        {
          "category": "mitigation",
          "details": "Customers should immediately apply the following mitigations to reduce the risk of exploit: \u2022 Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP \u2022 Configure the Access Control List following the recommendations of the user manuals: \u201cModicon M340 for Ethernet Communications Modules and Processors User Manual\u201d in chapter \u201cMessaging Configuration Parameters\u201d: https://www.se.com/ww/en/download/document/31007131K01000/ \u2022 Consider use of external firewall devices such as EAGLE40-07 from Belden to establish VPN connections. For more details refer to \u201cModicon Controller Systems Cybersecurity, User Guide\u201d: https://www.se.com/ww/en/download/document/EIO0000001999/ \u2022 Ensure the M340 CPU is running with the memory protection activated by configuring the input bit to a physical input, for more details refer to the following guideline \u201cModicon Controller Systems Cybersecurity, User Guide\u201d chapter \u201cControler Memory Protection\u201d:  https://www.se.com/ww/en/download/document/EIO0000001999/ ",
          "product_ids": [
            "13"
          ],
          "url": "https://www.se.com/ww/en/download/document/31007131K01000/"
        },
        {
          "category": "mitigation",
          "details": "Customers should immediately apply the following mitigations to reduce the risk of exploit: \u2022 Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP  \u2022 Configure the Access Control List following the recommendations of the user manuals: \u201cMomentum for EcoStruxure\u2122 Control Expert - 171CBU78090, 171CBU98090, 171CBU98091 Processors, User Guide\u201d in the section \u201cControlling Access\u201d: https://www.se.com/ww/en/download/document/HRB44124/ \u2022 Consider use of external firewall devices such as EAGLE40-07 from Belden to establish VPN connections. For more details refer to \u201cModicon Controller Systems Cybersecurity, User Guide\u201d: https://www.se.com/ww/en/download/document/EIO0000001999/ ",
          "product_ids": [
            "10"
          ],
          "url": "https://www.se.com/ww/en/download/document/HRB44124/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "13",
            "10"
          ]
        }
      ],
      "title": " CVE-2024-8935"
    }
  ]
}