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CISA advisories

12 days ago

Hitachi Energy TRO600 series products

View CSAF 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. Read More 1 Affected Product TRO600 version 9.2.1.6 and prior Product Status: fixed, known_affected, recommended Remediations Vendor fixUpdate 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 View CVE Details 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 fixFixed 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 View CVE Details 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 found in the Hitachi Energy’s “Industrial Control Systems Cybersecurity Best Practices” Cybersecurity Notification. [1] SSVC SSVCv2/E:N/A:N/2026-10-26T14:54:19Z/ Recommended Practices CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. Advisory Conversion Disclaimer This ICSA is a verbatim republication of Hitachi Energy PSIRT 8DBD000224 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided "as-is" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact Hitachi Energy PSIRT directly for any questions regarding this advisory. Revision History Initial Release Date: 2026-10-27 Date Revision Summary 2026-10-27 1 Initial Public release 2026-10-29 2 Initial CISA Republication of Hitachi Energy PSIRT 8DBD000224 advisory Legal Notice and Terms of Use

CVE-2026-10756coverage CVE-2026-106087coverage

hitachi energy tro600 series remote code execution arbitrary file read sensitive information

9 more topics

network access restrictions missing authentication cve-2026-10756 cve-2026-106087 software updates industrial control systems firewalls

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