CVE-2021-43985Network attack vector

Unauthenticated settings access via unenforced access controls

Published Dec 23, 2021 · Updated Sep 16, 2024

Authentication bypass in mySCADA Technologies myPRO 8.20.0 and earlier allows remote attackers to access the Settings page. The Settings page fails to enforce authentication or authorization before serving its privileged interface. Network-reachable attackers need no credentials or user interaction, but public sources do not identify the exact request path or failed access-control check.

CVSS severity9.1
Critical
EPSS probability1.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in mySCADA Technologies myPRO 8.20.0 and earlier allows remote attackers to access the Settings page. The Settings page fails to enforce authentication or authorization before serving its privileged interface. Network-reachable attackers need no credentials or user interaction, but public sources do not identify the exact request path or failed access-control check.

The record

CVE
CVE-2021-43985
Published
Dec 23, 2021
Updated
Sep 16, 2024
Vendor
mySCADA Technologies
Product
myPRO
Classifications
CWE-288, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 23, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.1ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-288Authentication Bypass Using an Alternate Path or Channel
T1190Exploit Public-Facing Application

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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