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Vulnerability record · CVE-2021-43987 · published 23 December 2021

CVE-2021-43987: Myscada mypro vulnerability

Myscada · Mypro

An additional, nondocumented administrative account exists in mySCADA myPRO Versions 8.20.0 and prior that is not exposed through the web interface, which cannot be deleted or changed through the regular web interface.

9.8 CVSS 3.1 Critical EPSS 1.2% · top 33.7% CWE-912 · CWE-912
9.8CVSS 3.1 base score, v2 7.5
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

An additional, nondocumented administrative account exists in mySCADA myPRO Versions 8.20.0 and prior that is not exposed through the web interface, which cannot be deleted or changed through the regular web interface.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.cisa.gov/uscert/ics/advisories/icsa-21-355-01 Third Party AdvisoryUS Government Resource
https://www.cisa.gov/uscert/ics/advisories/icsa-21-355-01 Third Party AdvisoryUS Government Resource

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2025-24865Myscada mypro missing authentication for critical function vulnerabilityThe administrative web interface of mySCADA myPRO Manager can be accessed without authentication which could allow an unauthorized attacker to retrie…EPSS 7.2%9.8CVE-2021-43981Myscada mypro os command injection vulnerabilitymySCADA myPRO: Versions 8.20.0 and prior has a feature to send emails, which may allow an attacker to inject arbitrary operating system commands thro…EPSS 1.2%9.8CVE-2021-43984Myscada mypro os command injection vulnerabilitymySCADA myPRO: Versions 8.20.0 and prior has a feature where the firmware can be updated, which may allow an attacker to inject arbitrary operating s…EPSS 1.2%9.8CVE-2021-43985Myscada mypro authentication bypass via alternate path vulnerabilityAn unauthenticated remote attacker can access mySCADA myPRO Versions 8.20.0 and prior without any form of authentication or authorization.EPSS 1.5%9.8CVE-2021-44453Myscada mypro os command injection vulnerabilitymySCADA myPRO: Versions 8.20.0 and prior has a vulnerable debug interface which includes a ping utility, which may allow an attacker to inject arbitr…EPSS 1.4%9.8CVE-2021-23198Myscada mypro os command injection vulnerabilitymySCADA myPRO: Versions 8.20.0 and prior has a feature where the password can be specified, which may allow an attacker to inject arbitrary operating…EPSS 1.2%9.8CVE-2021-22657Myscada mypro os command injection vulnerabilitymySCADA 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 opera…EPSS 1.2%9.3CVE-2025-25067Myscada mypro os command injection vulnerabilitymySCADA myPRO Manager is vulnerable to an OS command injection which could allow a remote attacker to execute arbitrary OS commands.EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2021-43987), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.