CVE-2021-40339: Hitachi Linkone

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

Configuration vulnerability in Hitachi Energy LinkOne application due to the lack of HTTP Headers, allows an attacker that manages to exploit this vulnerability to retrieve sensitive information. This issue affects: Hitachi Energy LinkOne 3.20; 3.22; 3.23; 3.24; 3.25; 3.26.

Affected products

• Hitachi Linkone: version 3.20 only; version 3.22 only; version 3.23 only; version 3.24 only; version 3.25 only; version 3.26 only

Published 2022-01-28. Last modified 2026-06-17.