Cyber Resilience

CVE-2021-40334

High

Published: 02 December 2021

Published
02 December 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS Score 0.0041 61.6th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-40334 is a high-severity Missing Handler (CWE-431) vulnerability in Hitachienergy Fox615 Firmware. Its CVSS base score is 8.6 (High).

Operationally, ranked in the top 38.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

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issue affects: Hitachi Energy FOX61x versions prior to R15A. Hitachi Energy XCM20 versions prior to R15A.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

hitachienergy
fox615 firmware
≤ r15a
hitachienergy
xcm20 firmware
≤ r15a

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References