CVE-2021-37401
CRITICAL
Published Dec 28, 20214y ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Published Dec 28, 2021 4y ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
No active exploitation signals — not in CISA KEV and no EPSS score yet.
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-522
Affected Products 15
| Vendor | Product | Version | Range |
|---|---|---|---|
| idec | data_file_manager | * | ≤2.12.1 |
| idec | windedit | * | ≤1.3.1 |
| idec | windldr | * | ≤8.19.1 |
| idec | microsmart_plus_fc6b_firmware | * | ≤2.31 |
| idec | microsmart_plus_fc6b | * | any |
| idec | microsmart_plus_fc6a_firmware | * | ≤1.91 |
| idec | microsmart_plus_fc6a | * | any |
| idec | microsmart_fc6b_firmware | * | ≤2.31 |
| idec | microsmart_fc6b | * | any |
| idec | microsmart_fc6a_firmware | * | ≤2.32 |
| idec | microsmart_fc6a | * | any |
| idec | ft1a_smartaxix_pro_firmware | * | ≤2.31 |
| idec | ft1a_smartaxix_pro | * | any |
| idec | ft1a_smartaxix_lite_firmware | * | ≤2.31 |
| idec | ft1a_smartaxix_lite | * | any |
References 4
- jvn.jp https://jvn.jp/en/vu/JVNVU92279973/
- us.idec.com https://us.idec.com/idec-us/en/USD/Programmable-Logic-Controller/Micro-PLC/FC6A-MicroSmart/c/MicroSmart_FC6A
- us.idec.com https://us.idec.com/idec-us/en/USD/Software-Downloads-Automation-Organizer
- idec.com https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdf
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.