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Fencer Intel
medium 6.7

CVE-2021-22278 json

Certificate verification vulnerability in Update Manager of PCM600 Engineering Tool

published 5y ago modified 4mo 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.

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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, 2026-11-09).

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 Intel 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.