Summary
Schneider Electric is aware of a vulnerability in its EasyLogic T150 (formerly known as Saitel DR) and Saitel
DP Remote Terminal Unit & Controller products.
The [EasyLogic T150 (formerly known as Saitel DR RTU)](https://www.se.com/ww/en/product-country-selector/?pageType=product-range&sourceId=62685#overview) is a field device, offering a solid and powerful
modular platform for data acquisition, communication, automation and IED integration for distribution and
transmission networks, generation sector and railway.
The [Saitel DP RTU](https://www.se.com/ww/en/product-country-selector/?pageType=product-range&sourceId=61747) is a modular platform for medium voltage and high voltage public distribution and
transmission substation control.
Failure to apply the fix provided below may risk a path traversal–based attack in which an authenticated user
could gain unauthorized file access.
Vulnerabilities 1
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High 7.1
Improper Limitation of a Pathname to a Restricted Directory Vulnerability on Multiple Products
CWE-22: Improper Limitation of a Pathname to a Restricted Directory (“Path Traversal”) vulnerability that could cause unauthorized access to sensitive files when user-supplied input is improperly handled during server-side file path processing.
Revision history
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#2
Initial CISA Republication of Schneider Electric CPCERT SEVD-2026-132-03 advisory
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#1
Original Release
References
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Improper Limitation of a Pathname to a Restricted Directory vulnerability on Remote Terminal Unit and Controller Products - SEVD-2026-132-03 PDF Version
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-132-03&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2026-132-03.pdf
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Recommended Cybersecurity Best Practices
https://www.se.com/ww/en/download/document/7EN52-0390/
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ICS Advisory ICSA-26-169-04 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-26-169-04
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Recommended Practices
https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01
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Recommended Practices
https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
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Recommended Practices
https://www.cisa.gov/topics/industrial-control-systems
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Recommended Practices
https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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Recommended Practices
https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
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Recommended Practices
https://www.cisa.gov/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b