high severity September 03, 2026 · 2 min read

CISA ICS Advisory: Schneider Electric Easergy, EcoStruxture, PowerLogic, and Saitel Products (Update A)

Here’s what this advisory affects, and what to do about it.

Schneider Electric is aware of a vulnerability in the following products: The Easergy C5 is a scalable and interoperable bay controller, protection and merging unit for large and critical infrastructure electrical distribution systems. The Easergy MiCOM P30 is a family of multifunction protection and control relays designed for medium, high and extra high voltage electrical networks. The Easergy MiCOM P40 is a protection relay series for Medium Voltage, High Voltage and Extra High Voltage protection. The Easergy MiCOM C264 is a modular and compact substation or bay controller, smart RTU and MV

CISA ICS Advisory: Schneider Electric Easergy, EcoStruxture, PowerLogic, and Saitel Products (Update A)

CISA published an updated Industrial Control Systems advisory on September 03, 2026, warning of a vulnerability in multiple Schneider Electric protection and control products used in electrical distribution networks.

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Improper Input Validation in Protection Relays

The advisory details a vulnerability stemming from improper input validation that could allow an attacker to cause a denial-of-service condition or execute arbitrary code on affected devices. Schneider Electric has coordinated disclosure with CISA. The advisory does not state whether the vulnerability has been exploited in the wild.

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Affected Products

The following Schneider Electric products are affected:

Easergy C5 bay controller, protection and merging unit
Easergy MiCOM P30 family of multifunction protection and control relays
Easergy MiCOM P40 protection relay series
Easergy MiCOM C264 substation and bay controller, smart RTU

These devices are deployed in medium, high, and extra-high voltage electrical networks as well as large and critical infrastructure electrical distribution systems. The advisory does not list specific version numbers or build strings that are vulnerable.

What to Do

Determine whether any Easergy C5, MiCOM P30, MiCOM P40, or MiCOM C264 devices are present in your operational technology environment.
Apply the vendor-provided update or mitigation when Schneider Electric releases it.
Implement the compensating controls and network segmentation measures listed in the advisory.
Monitor Schneider Electric’s official security notification channel for patch availability.
Review and update affected asset inventories with the new vulnerability information.

Organizations responsible for critical electrical infrastructure should treat this advisory as high priority given the role these devices play in protection and control functions.

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Sources: CISA ICS Advisory

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