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Vulnerability record · CVE-2023-6711 · published 19 December 2023

CVE-2023-6711: Hitachienergy rtu500 firmware classic buffer overflow vulnerability

Hitachienergy · Rtu500 Firmware

Vulnerability exists in SCI IEC 60870-5-104 and HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below. Specially crafted messages sent to the mentioned components are not validated properly and can result in buffer overflow and as final consequence to a reboot of an RTU500 CMU.

7.5 CVSS 3.1 High EPSS 0.67% · top 49.4% CWE-120 · Classic buffer overflow
7.5CVSS 3.1 base score
0.67%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Vulnerability exists in SCI IEC 60870-5-104 and HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below. Specially crafted messages sent to the mentioned components are not validated properly and can result in buffer overflow and as final consequence to a reboot of an RTU500 CMU.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://publisher.hitachienergy.com/preview?DocumentId=8DBD000184&languageCode=en&Preview=true Vendor Advisory
https://publisher.hitachienergy.com/preview?DocumentId=8DBD000184&languageCode=en&Preview=true Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-6711), CISA KEV, FIRST EPSS (scores of 2026-10-12). This page is refreshed as NVD updates the record.