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Fencer Vulns
low 3.7

CVE-2021-40339 json

OWASP Related Vulnerabilities in Hitachi Energy’s LinkOne Product

published 2022-01-28 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27518

cvss
3.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-22-088-03 updated cvss 3.7

Hitachi Energy LinkOne WebView

  • Hitachi Energy LinkOne WebView 3.25, 3.23, 3.22, 3.24
    affected: mitigation “Hitachi Energy recommends applying the available security patch or updating LinkOne to v3.27. Contact Hitachi Energy for more information on applying the security patch or updating LinkOne to v3.27” hitachienergy.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.