CVE-2021-43555

HIGHCVSS 7.8/10EPSS 37.99%

Last modified

CVE-2021-43555 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 37.99% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.8/10

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

EPSS Probability
37.99%

98.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MyscadaMydesigner<= 8.20.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-43555?
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.
How severe is CVE-2021-43555?
CVE-2021-43555 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 37.99% probability of exploitation in the next 30 days.
How do I fix CVE-2021-43555?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-43555?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST