Schneider Electric EcoStruxure
Schneider Electric is aware of a vulnerability in its EcoStruxure OPC UA Server Expert product(s). The [EcoStruxure OPC UA Server Expert product(s)](https://www.se.com/ww/en/product-country-selector/?pageType=product-range&sourceId=66388#overview) is a state-of-the-art OPC UA communication platform linking Modicon industrial equipment and PLCs to the Industrial Internet of Things (IIoT). [EcoStruxure Modicon Communication Server](https://www.se.com/ww/en/download/document/ES_MCS_2.01_SP2/) is a communication platform seamlessly linking Modicon PLCs to Aveva System Platform by using the OPC UA protocol with the help of OPC UA Server. Failure to apply the fix / mitigation provided below may risk denial of service of EcoStruxureTM OPCUA Server Expert, which could result in the loss of real-time process data from Modicon Controller.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2024-10085US | — | — | ||
CWE-770: Allocation of Resources Without Limits or Throttling vulnerability exists that could cause denial of service of the OPC UA communication platform when a large number of OP… | ||||
references
External citations — patches, advisories, analysis.
- EcoStruxure OPC UA Server Expert and EcoStruxure Modicon Communication Server - SEVD-2025-287-01 PDF Versionself
- EcoStruxure OPC UA Server Expert and EcoStruxure Modicon Communication Server - SEVD-2025-287-01 CSAF Versionself
- ICS Advisory ICSA-25-301-01 JSONself
- ICS Advisory ICSA-25-301-01 - Web Versionself
- Recommended Practicesexternal
- Recommended Practicesexternal
- Recommended Practicesexternal
- Recommended Practicesexternal
remediations (3)
- MitigationEcoStruxure Modicon Communication Server
Schneider Electric is establishing a remediation plan for all future versions of EcoStruxure Modicon Communication Server that will include a fix for this vulnerability. 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: * Set the “Security Policy” to Basic256-Sha256 (default value indicated by unchecked “Security Policy” setting) used for secure communication between OPC UA client & server based on OPC UA standard. * Ensure that the “Anonymous user token” setting remains unchecked (unchecked by default) to prevent anonymous authentication. * Set “User authentication” setting (checked by default) used to authenticate & authorize OPC UA client. * Set “X509 user token” setting (checked by default) used to authenticate & authorize OPC UA client. For more details, refer to “EcoStruxure Modicon Server User Guide” chapter “Security Settings”: https://www.se.com/fr/fr/download/document/EIO0000004083/ * Follow workstation, network and site-hardening guidelines in the “Recommended Cybersecurity Best Practices”: https://www.se.com/ww/en/download/document/7EN52-0390/
https://www.se.com/fr/fr/download/document/EIO0000004083/ - MitigationEcoStruxure OPC UA Server Expert
If customers choose not to apply the remediation provided above, they should immediately apply the following mitigations to reduce the risk of exploit: * Set the “Security Policy” to Basic256-Sha256 (default value indicated by unchecked “Security Policy” setting) used for secure communication between OPC UA client & server based on OPC UA standard. * Ensure that the “Anonymous user token” setting remains unchecked (unchecked by default) to prevent anonymous authentication. * Set “User authentication” setting (checked by default) used to authenticate & authorize OPC UA client. * Set “X509 user token” setting (checked by default) used to authenticate & authorize OPC UA client. For more details, refer to “EcoStruxure OPC UA Server Expert User Guide” chapter “Security Management”: https://www.se.com/ww/en/download/document/MFR53158/ * Follow workstation, network and site-hardening guidelines in the “Recommended Cybersecurity Best Practices”: https://www.se.com/ww/en/download/document/7EN52-0390/
https://www.se.com/ww/en/download/document/MFR53158/ - FixedEcoStruxure OPC UA Server Expert
Version SV2.01 SP3 of EcoStruxure OPC UA Server Expert includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/66388-ecostruxure-opc-ua-server-expert/#software-and-firmware
https://www.se.com/ww/en/product-range/66388-ecostruxure-opc-ua-server-expert/#software-and-firmware
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