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Industrial control advisorySeverity 6.5 medium
Hitachi Energy REB500
ICSA-26-279-05 · CISA · September 29, 2026
Summary
Hitachi Energy is aware of open-source software vulnerabilities that affect REB500 product versions listed in this document. These vulnerabilities can be exploited to carry out Denial of Service (DoS) attack on the product. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation.
From CISA, quoted as published. Check the source before acting.
What to do
Update to version 8.3.4.0
Vendor fix or mitigation, quoted from the advisory.
Each CVE in this advisory
| CVE | Severity | Known exploited | Exploit likelihood |
|---|---|---|---|
| CVE-2024-8176 | 6.5 medium | No | 1.4% |
| CVE-2025-59375 | 6.5 medium | No | 1.4% |
Severity from the advisory (CVSS), known exploitation from CISA's catalog, exploit likelihood from EPSS (next 30 days).
Affected products
| Vendor | Product |
|---|---|
| Hitachi Energy | REB500 |
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
- September 29, 2026: Initial public release
- October 6, 2026: Initial CISA Republication of Hitachi Energy PSIRT 8DBD000247 advisory
- November 9, 2026: First collected by Watch
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