CVE-2021-20827

Description

Plaintext storage of a password vulnerability in IDEC PLCs (FC6A Series MICROSmart All-in-One CPU module v2.32 and earlier, FC6A Series MICROSmart Plus CPU module v1.91 and earlier, WindLDR v8.19.1 and earlier, WindEDIT Lite v1.3.1 and earlier, and Data File Manager v2.12.1 and earlier) allows an attacker to obtain the PLC Web server user credentials from file servers, backup repositories, or ZLD files saved in SD cards. As a result, the attacker may access the PLC Web server and hijack the PLC, and manipulation of the PLC output and/or suspension of the PLC may be conducted.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.15%
Vendor Advisory idec.com
Affected: IDEC Corporation IDEC PLC
Published at:
Updated at:

References

Link Tags
https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdf vendor advisory
https://jvn.jp/en/vu/JVNVU92279973/index.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-20827?
CVE-2021-20827 has been scored as a high severity vulnerability.
How to fix CVE-2021-20827?
To fix CVE-2021-20827, 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-2021-20827 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20827 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20827?
CVE-2021-20827 affects IDEC Corporation IDEC PLC.
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