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Known vulnerabilities in Hitachi Energy RTU500 series CMU Firmware

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CVE Summary Score Published
CVE-2026-8067 An improper authorization vulnerability in the end-of-life versions of RTU500’s web application allows an… 6.5 Medium Sep 29, 2026
CVE-2026-8066 A directory traversal vulnerability in the file upload functionality of Hitachi Energy RTU500 end-of-life versions… 9.1 Critical Sep 29, 2026
CVE-2026-8065 An authentication bypass vulnerability in the firmware update endpoint of Hitachi Energy RTU500 end-of-life versions… 9.1 Critical Sep 29, 2026
CVE-2026-17539 RTU500 has a vulnerability, where high-load scenarios, such as sending GI requests at short intervals, may cause a… 5.9 Medium Sep 3, 2026
CVE-2026-8479 IEC 60870-5-104 used in bidirectional mode in RTU500 is vulnerable for a NULL pointer dereferencing, if a specially… 6.9 Medium May 26, 2026
CVE-2026-1773 IEC 60870-5-104 used in RTU500: Potential Denial of Service impact on reception of invalid U-format frame. Product is… 8.7 High Feb 24, 2026
CVE-2026-1772 RTU500 web interface: An unprivileged user can read user management information 5.3 Medium Feb 24, 2026
CVE-2024-2617 A vulnerability exists in the RTU500 that allows for authenticated and authorized users to bypass secure update, if… 7.2 High Apr 30, 2024
CVE-2024-1532 A vulnerability exists in the stb-language file handling that affects the RTU500 series product versions listed below 6.8 Medium Mar 27, 2024
CVE-2024-1531 A vulnerability exists in the stb-language file handling that affects the RTU500 series product versions listed below 8.2 High Mar 27, 2024
CVE-2022-2081 A vulnerability exists in the HCI Modbus TCP function included in the product versions listed above 7.5 High Jan 4, 2024
CVE-2023-6711 Vulnerability exists in SCI IEC 60870-5-104 and HCI IEC 60870-5-104 that affects the RTU500 series product versions… 5.9 Medium Dec 19, 2023
CVE-2022-28613 A vulnerability exists in the HCI Modbus TCP function included in the product versions listed above 7.5 High May 2, 2022

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