Summary
Hitachi Energy is aware of multiple vulnerabilities that affect the TRO600 series product versions listed in this document. These vulnerabilities can be exploited for remote code execution (RCE) to carry out further attacks and disclosure of sensitive information. Please refer to the Recommended Immediate Actions section for information about the mitigation/remediation.
The following versions of Hitachi Energy TRO600 series products are affected:
- TRO600 vers:TRO600/<=9.2.1.6, vers:TRO600/<=9.1.1.0, 9.2.2.1, 9.1.2.0 (CVE-2026-10756, CVE-2026-106087)
CVSS
Vendor
Equipment
v3 7.5
Hitachi Energy
TRO600
2 Vulnerabilities
Improper Restriction of Communication Channel to Intended Endpoints, Missing Authentication for Critical Function
Background
- Critical Infrastructure Sectors: Energy
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: Switzerland
Vulnerabilities
Expand All +
CVE-2026-10756
TRO600 contains a vulnerability that allows an authenticated attacker to bypass network access restrictions and access services intended to be reachable only from localhost. By leveraging port forwarding, an attacker can interact with locally bound ports and services, resulting in unauthorized access to sensitive functionality and confidential information, and causing availability impact.
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1 Affected Product
TRO600 version 9.2.1.6 and prior
Product Status: fixed, known_affected, recommended
Remediations
Vendor fix
Update to version 9.2.2.1
Additional Metrics
Relevant CWE: CWE-923 Improper Restriction of Communication Channel to Intended Endpoints
CVSS Version
Base Score
Base Severity
Vector String
3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0
7.7
HIGH
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVE-2026-106087
TRO600 contains an arbitrary file read vulnerability. An unauthenticated attacker can exploit this vulnerability to read or download arbitrary files on the affected device, including sensitive configuration files and password data, resulting in the disclosure of sensitive information.
Read More
2 Affected Products
TRO600 version 9.2.1.6 and prior
Product Status: fixed, known_affected, recommended
Remediations
TRO600 version 9.1.1.0 and prior
Product Status: fixed, known_affected, recommended
Remediations
Vendor fix
Fixed in version 9.1.2.0. Update to the latest version 9.2.2.1.
Additional Metrics
Relevant CWE: CWE-306 Missing Authentication for Critical Function
CVSS Version
Base Score
Base Severity
Vector String
3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0
8.7
HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Acknowledgments
- Hitachi Energy Internal Team reported these vulnerabilities to CISA.
Notice
The information in this document is subject to change without notice and should not be construed as a commitment by Hitachi Energy. Hitachi Energy provides no warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, for the information contained in this document, and assumes no responsibility for any errors that may appear in this document. In no event shall Hitachi Energy or any of its suppliers be liable for direct, indirect, special, incidental or consequential damages of any nature or kind arising from the use of this document, or from the use of any hardware or software described in this document, even if Hitachi Energy or its suppliers have been advised of the possibility of such damages. This document and parts hereof must not be reproduced or copied without written permission from Hitachi Energy and the contents hereof must not be imparted to a third party nor used for any unauthorized purpose. All rights to registrations and trademarks reside with their respective owners.
Support
For additional information and support please contact your product provider or Hitachi Energy service organization. For contact information, see https://www.hitachienergy.com/contact-us/ for Hitachi Energy contact-centers.
General Mitigation Factors
Recommended security practices and firewall configurations can help protect an industrial control system network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Industrial control systems should not be used for Internet surfing, instant messaging, or receiving e-mails. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system. Additional information on Industrial Control Systems Cybersecurity Best Practices can be
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