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Industrial control advisorySeverity 7.5 high

Hitachi Energy RTU500 Series

ICSA-25-259-02 · CISA · September 9, 2025

Summary

Hitachi Energy is aware of multiple vulnerabilities that affect the RTU500 versions that are listed below. An attacker successfully exploiting these vulnerabilities could potentially cause Denial of Service (DoS) impact on RTU500. Please refer to the Recommended Immediate Actions for information about the available mitigation/remediation strategies.

From CISA, quoted as published. Check the source before acting.

What to do

Update to CMU Firmware version 12.7.8 Follow general mitigation factors /workarounds Update to CMU Firmware version 13.5.4 Follow general mitigation factors/workarounds. Update to CMU Firmware version 13.6.3 Update to CMU Firmware version 13.7.7 Follow general mitigation factors/ workarounds. Follow General Mitigation Factors/Workarounds.

Vendor fix or mitigation, quoted from the advisory.

Each CVE in this advisory

CVESeverityKnown exploitedExploit likelihoodWeakness
CVE-2023-29537.5 highNo2.0%NULL Pointer Dereference (CWE-476)
CVE-2025-392034.3 mediumNo0.2%Improper Validation of Integrity Check Value (CWE-354)
CVE-2024-454926.5 mediumNo1.4%Integer Overflow or Wraparound (CWE-190)
CVE-2024-454916.5 mediumNo1.1%Heap-based Buffer Overflow (CWE-122)
CVE-2024-454906.5 mediumNo1.7%Improper Restriction of XML External Entity Reference (CWE-611)
CVE-2024-287576.5 mediumNo2.0%Improper Restriction of Recursive Entity References in DTDs (CWE-776)
CVE-2025-60216.5 mediumNo1.5%Stack-based Buffer Overflow (CWE-121)

Severity from the advisory (CVSS), known exploitation from CISA's catalog, exploit likelihood from EPSS (next 30 days).

Affected products

VendorProductAffected versionsFixed
Hitachi EnergyRTU500 series CMU Firmwarevers:RTU500_series_CMU_Firmware/>=12.7.1|<=12.7.7, vers:RTU500_series_CMU_Firmware/>=13.5.1|<=13.5.3, 13.6.1, vers:RTU500_series_CMU_Firmware/>=13.7.1|<=13.7.6, vers:RTU500_series_CMU_Firmware/>=13.4.1|<=13.4.4—

Why it's on these mode pages

  • Maritime: Vendor table: Hitachi Energy (industrial control makers used in every mode, all modes) (matched by rule)
  • Pipeline: Vendor table: Hitachi Energy (industrial control makers used in every mode, all modes) (matched by rule)
  • Freight rail: Vendor table: Hitachi Energy (industrial control makers used in every mode, all modes) (matched by rule)
  • Passenger rail and transit: Vendor table: Hitachi Energy (industrial control makers used in every mode, all modes) (matched by rule)
  • Highway and motor carrier: Vendor table: Hitachi Energy (industrial control makers used in every mode, all modes) (matched by rule)
  • Postal and parcel: Vendor table: Hitachi Energy (industrial control makers used in every mode, all modes) (matched by rule)

Change history

  1. September 9, 2025: Initial public release.
  2. September 16, 2025: CISA Republication - Initial Publication
  3. September 29, 2026: Updated fixed version 12.7.8
  4. October 8, 2026: CISA Republication update based on Hitachi Energy PSIRT 8DBD000220 advisory
  5. November 9, 2026: First collected by Watch

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