VULNERABILITY INTELLIGENCE

CVE-2021-40334

CVSS score8.6 HIGH
EPSS probability0.99%
CISA KEVNot currently listed
Published2021-12-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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.

Weakness classification

  • cybersecurity@hitachienergy.com: CWE-431
  • nvd@nist.gov: NVD-CWE-Other

Primary references