CVE-2022-2081 - CVE House
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Status published High CVE-2022-2081

A vulnerability exists in the HCI Modbus TCP function included...

Vulnerability Description

A vulnerability exists in the HCI Modbus TCP function included in the product versions listed above. If the HCI Modbus TCP is enabled and configured, an attacker could exploit the vulnerability by sending a specially crafted message to the RTU500 in a high rate, causing the targeted RTU500 CMU to reboot. The vulnerability is caused by a lack of flood control which eventually if exploited causes an internal stack overflow in the HCI Modbus TCP function.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Hitachi Energy

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Affected Software

RTU500 series CMU firmware
Vulnerable Versions:
12.0.1.0, 12.2.1.0, 12.4.1.0, 12.6.1.0, 12.7.1.0, 13.2.1.0, 13.3.1.0

Timeline

Official Publish: January 4th, 2024
Last Modified: May 22nd, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)