Hitachi Energy REB500
Hitachi Energy REB500 product affected by DoS vulnerabilities in libexpat library.
Hitachi Energy has identified vulnerabilities in its REB500 product, specifically affecting versions 8.3.3.1 and prior. These flaws, stemming from the libexpat library, can be exploited by authenticated users to cause Denial of Service (DoS) attacks. The company recommends updating to version 8.3.4.0 for remediation.
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The lesson from this incident
Full lessonVulnerabilities in Hitachi Energy's REB500 product (versions 8.3.3.1 and prior) stem from flaws in the bundled libexpat third-party library, highlighting the risk of inherited vulnerabilities from open-source dependencies in critical infrastructure components. Authenticated users can exploit these flaws to trigger Denial of Service conditions, potentially disrupting industrial control and protection systems. This case underscores that even authenticated access can be weaponized when underlying libraries are not kept current. Organizations relying on OT/ICS products must actively track third-party component vulnerabilities — not just first-party patches — to maintain a complete security posture.
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Indicators of Compromise
Extracted by AI from the linked source. Not reviewed by an editor. How this works
- cve — CVE-2024-8176
- cve — CVE-2025-59375