# Hitachi Energy RTU500 secure update bypass vulnerability

Published: 2026-03-03 · Severity: routine · Sectors: energy
Canonical: https://vorant.io/reports/dbf7e15a-6374-5c68-a498-e924d9fb222e/hitachi-energy-rtu500-secure-update-bypass-vulnerability

> CVE-2024-2617 in Hitachi Energy RTU500 allows authenticated users to bypass secure update and deploy unsigned firmware.

Hitachi Energy has disclosed CVE-2024-2617, a vulnerability in the RTU500 Series product's Web server component that permits authenticated and authorized users to circumvent the secure update feature. If an attacker successfully exploits this flaw, they could deploy unsigned firmware to the RTU500, potentially compromising the integrity of critical energy infrastructure. The vulnerability affects CMU Firmware versions 13.2.1–13.2.7, 13.4.1–13.4.4, and 13.5.1–13.5.3; it requires secure update to not be enabled on all CMUs of an RTU500 to be exploitable.

The vulnerability is classified under CWE-358 (Improperly Implemented Security Check for Standard Metrics). Hitachi Energy recommends immediate patching: users should update to CMU Firmware version 13.7.7 or later, or version 13.5.4 or later, and ensure the secure update feature is enabled across all CMUs. The advisory does not indicate active exploitation in the wild, but given the critical nature of energy infrastructure and the relative ease of exploitation for authenticated actors with internal access, defenders should prioritize deployment of patches and verification of secure update configuration.

## Mentioned in this report

- Vulnerabilities: CVE-2024-2617

Source reporting: https://www.cisa.gov/news-events/ics-advisories/icsa-25-023-02

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