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Fencer Vulns
critical 10.0

CVE-2021-22657 json

mySCADA myPRO

published 2021-12-23 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9793

cvss
10.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits
0
none known

Summary

mySCADA myPRO: Versions 8.20.0 and prior has a feature where the API password can be specified, which may allow an attacker to inject arbitrary operating system commands through a specific parameter.

Vendor advisories

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

cisa ICSA-21-355-01 updated cvss 10.0

mySCADA myPRO

  • mySCADA myPRO <= 8.20.0
    affected: mitigation “mySCADA recommends users upgrade to Version 8.22.0 or higher. For more information, contact mySCADA technical support.” myscada.org

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

1.30% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • mySCADA myPRO

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

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.