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Fencer Vulns
medium 6.7

CVE-2021-22278 json

Certificate verification vulnerability in Update Manager of PCM600 Engineering Tool

published 2021-10-28 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9424

cvss
6.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

A certificate validation vulnerability in PCM600 Update Manager allows attacker to get unwanted software packages to be installed on computer which has PCM600 installed.

Vendor advisories

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

cisa ICSA-21-336-07 updated cvss 6.7

Hitachi Energy PCM600 Update Manager

  • Hitachi Energy PCM600 Update Manager 2.1, 2.1.0.4, 2.2 2.2.0.1, 2.2.0.2, 2.2.0.23, 2.3.0.60, 2.4.20041.1, 2.4.20119.2
    affected: vendor fix, mitigation “Please see Hitachi Energy advisory 8DBD000056 for additional mitigation and update information.” www143.abb.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

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • ABB PCM600
  • ABB PCM600 Update Manager
  • Hitachi Energy PCM600
  • Hitachi Energy PCM600 Update Manager

Classification

Weakness
  • CWE-295 Improper Certificate Validation

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.