RTU500 has a vulnerability, where high-load scenarios, such as sending GI requests at short intervals, may cause a NULL pointer dereference in the last entry of the enhanced message queue. This can cause a BCI_IEC104 fatal write error, resulting in connection interruption and restart, and ultimately a denial of service for bidirectional IEC 60870-5-104 communication.

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Fixes

Solution

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Workaround

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History

Thu, 03 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 03 Sep 2026 09:30:00 +0000

Type Values Removed Values Added
Title Denial of Service via NULL Pointer Dereference in Hitachi Energy RTU500 IEC 60870-5-104 Communication

Thu, 03 Sep 2026 08:15:00 +0000

Type Values Removed Values Added
Description RTU500 has a vulnerability, where high-load scenarios, such as sending GI requests at short intervals, may cause a NULL pointer dereference in the last entry of the enhanced message queue. This can cause a BCI_IEC104 fatal write error, resulting in connection interruption and restart, and ultimately a denial of service for bidirectional IEC 60870-5-104 communication.
Weaknesses CWE-476
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Hitachi Energy

Published:

Updated: 2026-09-03T12:48:06.779Z

Reserved: 2026-07-27T09:46:09.631Z

Link: CVE-2026-17539

cve-icon Vulnrichment

Updated: 2026-09-03T12:48:03.247Z

cve-icon NVD

Status : Received

Published: 2026-09-03T13:04:35.693

Modified: 2026-09-03T13:04:35.693

Link: CVE-2026-17539

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T09:15:05Z

Weaknesses