Schneider Electric Security Notification
Wiser Home Controller WHC-5918A
9 July 2024

Overview
Schneider Electric is aware of a vulnerability in its Wiser Home Controller WHC-5918A product.
The Wiser Home Controller WHC-5918A, a C-Bus based home automation controller, wasdiscontinued on December 31, 2015.
Failure to apply the mitigations provided below may risk credentials being stolen, which could
result in the Wiser Home Controller WHC-5918A being compromised.

Affected Products and Versions
ProductVersionWiser Home Controller WHC-5918A

All Versions of Wiser Home Controller WHC-5918A

Vulnerability Details
CVE ID: CVE-2024-6407
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-200: Information Exposure vulnerability exists that could cause disclosure ofcredentials when a specially crafted message is sent to the device.
Note regarding vulnerability details: The severity of vulnerabilities was calculated using theCVSS Base metrics in version 3.1 (CVSS v3.1) without incorporating the Temporal andEnvironmental metrics. Schneider Electric recommends that customers score the CVSS
Environmental metrics, which are specific to end-user organizations, and consider factors suchas the presence of mitigations in that environment. Environmental metrics may refine therelative severity posed by the vulnerabilities described in this document within a customer’s
environment.
Affected ProductMitigations

Wiser HomeController WHC5918A

The Wiser Home Controller WHC-5918A product has been
discontinued and is out of support. Customers should consider
upgrading to the latest product offering, C-Bus, Home Controller,
SpaceLogic IP, Free Standing, 24V DC, 5200WHC2, or removing
the Wiser Home Controller WHC-5918A from service.

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Document Reference Number – SEVD-2024-191-01

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Schneider Electric Security Notification
General Security Recommendations
We strongly recommend the following industry cybersecurity best practices.
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Passwords should include upper case, lower case, number and special characters, alength of 20 characters is ideal.
A default Admin password must be changed immediately when first received and after afactory reset.
Device should only be used in a personal home network.
Device should not have a publicly accessible IP address.
Do NOT use port forwarding to access a device from the public internet.
A device should be on its own network segment. If your router supports a guest network
or VLAN, it is preferable to locate the device there.
Use the strongest Wi-Fi encryption available, such as WPA3 or WPA2/3 with protected
management frames.
Schedule regular reboots of your routing device, smartphones, and computers.
Ensure that unauthorized individuals cannot gain physical access to your devices (USBor LAN ports should be easily accessible.

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

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 MATERIALSLINKED FROM IT (COLLECTIVELY, THIS “NOTIFICATION”) 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“AS-IS” BASIS WITHOUT WARRANTY OR GUARANTEE OF ANY KIND. SCHNEIDER ELECTRICDISCLAIMS 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

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Schneider Electric Security Notification
IDENTIFIED SITUATION. IN NO EVENT SHALL SCHNEIDER ELECTRIC BE LIABLE FOR ANYDAMAGES OR LOSSES WHATSOEVER IN CONNECTION WITH THIS NOTIFICATION, INCLUDINGDIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIALDAMAGES, EVEN IF SCHNEIDER ELECTRIC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCHDAMAGES. YOUR USE OF THIS NOTIFICATION IS AT YOUR OWN RISK, AND YOU ARE SOLELYLIABLE FOR ANY DAMAGES TO YOUR SYSTEMS OR ASSETS OR OTHER LOSSES THAT MAY
RESULT FROM YOUR USE OF THIS NOTIFICATION. SCHNEIDER ELECTRIC RESERVES THE RIGHTTO UPDATE OR CHANGE THIS NOTIFICATION AT ANY TIME AND IN ITS SOLE DISCRETION.
About Schneider ElectricSchneider’s purpose is to create Impact by empowering all to make the most of our energy and resources,
bridging progress and sustainability for all. We call this Life Is On.
Our mission is to be the trusted partner in Sustainability and Efficiency.
We are a global industrial technology leader bringing world-leading expertise in electrification, automation anddigitization to smart industries, resilient infrastructure, future-proof data centers, intelligent buildings, andintuitive homes. Anchored by our deep domain expertise, we provide integrated end-to-end lifecycle AI enabled
Industrial IoT solutions with connected products, automation, software and services, delivering digital twins to enableprofitable growth for our customers.
We are a people company with an ecosystem of 150,000 colleagues and more than a million partners operating inover 100 countries to ensure proximity to our customers and stakeholders. We embrace diversity and inclusion in
everything we do, guided by our meaningful purpose of a sustainable future for all.
www.se.com

Revision Control:
Version 1.0.0
09 July 2024

CPCERT

09-Jul-24

Original Release

Digitally signed by CPCERT
Date: 2024.07.08 13:06:16 -04'00'

Document Reference Number – SEVD-2024-191-01

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