CVE-2021-43555

mySCADA myDESIGNER

Description

mySCADA myDESIGNER Versions 8.20.0 and prior fails to properly validate contents of an imported project file, which may make the product vulnerable to a path traversal payload. This vulnerability may allow an attacker to plant files on the file system in arbitrary locations or overwrite existing files, resulting in remote code execution.

Remediation

Solution:

  • mySCADA recommends users apply update v8.22.0 or later. Upgrade note: RFID card access has been redesigned. If a user uses an RFID card to login, the user will need to re-enter the password for all RFID users in the project after the update is applied.

Categories

7.3
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.45% Top 20%
Third-Party Advisory cisa.gov
Affected: mySCADA myDESIGNER
Published at:
Updated at:

References

Link Tags
https://us-cert.cisa.gov/ics/advisories/icsa-21-313-04 us government resource third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-43555?
CVE-2021-43555 has been scored as a high severity vulnerability.
How to fix CVE-2021-43555?
To fix CVE-2021-43555: mySCADA recommends users apply update v8.22.0 or later. Upgrade note: RFID card access has been redesigned. If a user uses an RFID card to login, the user will need to re-enter the password for all RFID users in the project after the update is applied.
Is CVE-2021-43555 being actively exploited in the wild?
It is possible that CVE-2021-43555 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-43555?
CVE-2021-43555 affects mySCADA myDESIGNER.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.