12 December 2023 (9 April 2024)


Schneider Electric is aware of multiple vulnerabilities in its Trio Licensed and License-Free Data
Radio products.
The Trio Licensed Radio products are designed to provide complete, versatile, and high
availability system solutions for long range wireless data communications in SCADA and remote
telemetry applications. The Trio License-Free Radio products are a range of frequency-hopping
Ethernet and Serial Data Radios operating in the license-free 900Mhz and 2.4 Ghz band and
designed with versatility and flexibility in mind.
Failure to apply the remediations and mitigations provided below may risk disclosure of
information, or potential installation of malicious code.
April 2024 Update: A remediation is now available for Trio J-Series Ethernet Data Radio on

Affected Products and Versions

Vulnerability Details
CVE ID: CVE-2023-5629
CVSS v3.1 Base Score 8.2 | High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
CWE-601: URL Redirection to Untrusted Site (‘Open Redirect’) vulnerability exists that could
cause disclosure of information through phishing attempts over HTTP

CVE ID: CVE-2023-5630
CVSS v3.1 Base Score 6.5 | Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
CWE-494: Download of Code Without Integrity Check vulnerability exists that could allow a
privileged user to install an untrusted firmware.

Note regarding vulnerability details: The severity of vulnerabilities was calculated using the
CVSS Base metrics in version 3.1 (CVSS v3.1) without incorporating 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 the presence of mitigations in that environment. Environmental metrics may refine the
relative severity posed by the vulnerabilities described in this document within a customer’s


Customers should use appropriate patching methodologies when applying these patches to
their systems. We strongly recommend the use of back-ups and evaluating the impact of these
patches in a Test and Development environment or on an offline infrastructure. Contact
Schneider Electric’s Customer Care Center if you need assistance removing a patch.
If customers choose not to apply the remediation provided above, they should immediately
apply the following mitigations to reduce the risk of exploit.


To ensure you are informed of all updates, including details on affected products and
remediation plans, subscribe to Schneider Electric’s security notification service here:

General Security Recommendations
We strongly recommend the following industry cybersecurity best practices:

  • Locate control and safety system networks and remote devices behind firewalls and
    isolate them from the business network.
  • Install physical controls so no unauthorized personnel can access your industrial control
    and safety systems, components, peripheral equipment, and networks.
  • Place all controllers in locked cabinets and never leave them in the “Program” mode.
  • Never connect programming software to any network other than the network intended for
    that device.
  • 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.
  • 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.
  • Minimize network exposure for all control system devices and systems and ensure that
    they are not accessible from the Internet.
  • 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.
    For more information refer to the Schneider Electric Recommended Cybersecurity Best
    Practices document.

Schneider Electric recognizes the following researcher for identifying and helping to coordinate
a response to these vulnerabilities:

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 be
fully aware of this situation and can support you through the process.
For further information related to cybersecurity in Schneider Electric’s products, visit the
company’s cybersecurity support portal page: