CVE-2021-22657Network attack vector

Unauthenticated command injection via API password

Published Dec 23, 2021 · Updated Sep 17, 2024

OS command injection in mySCADA myPRO 8.20.0 and earlier allows remote attackers to execute arbitrary commands via a crafted API password parameter. The API accepts a caller-supplied password value and passes a specific parameter into operating-system command handling without adequate neutralization. No authentication or user interaction is required, so network access to the runtime can result in arbitrary command execution affecting confidentiality, integrity, and availability.

CVSS severity10.0
Critical
EPSS probability1.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in mySCADA myPRO 8.20.0 and earlier allows remote attackers to execute arbitrary commands via a crafted API password parameter. The API accepts a caller-supplied password value and passes a specific parameter into operating-system command handling without adequate neutralization. No authentication or user interaction is required, so network access to the runtime can result in arbitrary command execution affecting confidentiality, integrity, and availability.

The record

CVE
CVE-2021-22657
Published
Dec 23, 2021
Updated
Sep 17, 2024
Vendor
mySCADA Technologies
Product
myPRO
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 23, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All <=8.20.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

mySCADA Technologies · myPROversion=All <=8.20.0

Published CVSS scores

10.0ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78OS Command Injection
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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