CVE-2021-37401

Description

An attacker may obtain the user credentials from file servers, backup repositories, or ZLD files saved in SD cards. As a result, the PLC user program may be uploaded, altered, and/or downloaded.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.70% Top 30%
Vendor Advisory idec.com Vendor Advisory idec.com Vendor Advisory idec.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://us.idec.com/idec-us/en/USD/Programmable-Logic-Controller/Micro-PLC/FC6A-MicroSmart/c/MicroSmart_FC6A vendor advisory
https://us.idec.com/idec-us/en/USD/Software-Downloads-Automation-Organizer vendor advisory
https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdf vendor advisory
https://jvn.jp/en/vu/JVNVU92279973/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-37401?
CVE-2021-37401 has been scored as a critical severity vulnerability.
How to fix CVE-2021-37401?
To fix CVE-2021-37401, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-37401 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-37401 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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.