CVE-2021-40334 - CVE House
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Status published High CVE-2021-40334

SSH activation problem in the proprietary management protocol (port TCP 5558)

Vulnerability Description

Missing Handler vulnerability in the proprietary management protocol (port TCP 5558) of Hitachi Energy FOX61x, XCM20 allows an attacker that exploits the vulnerability by activating SSH on port TCP 5558 to cause disruption to the NMS and NE communication. This issue affects: Hitachi Energy FOX61x versions prior to R15A. Hitachi Energy XCM20 versions prior to R15A.

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.

References

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Affected Vendor

Hitachi Energy

View all reports →

Affected Software

FOX61x, XCM20
Vulnerable Versions:
R15A

Timeline

Official Publish: December 2nd, 2021
Last Modified: September 16th, 2024
Added to House: July 21st, 2026

CVSS Vectors

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

Weaknesses (CWE)

CWE-431

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.