CVE-2021-37401
CRITICALCVSS 9.8/10EPSS 1.34%
Last modified
CVE-2021-37401 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.34% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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 Fc6a Firmware | <= 1.91 |
| Idec | Microsmart Fc6b Firmware | <= 2.31 |
| Idec | Microsmart Fc6a Firmware | <= 2.32 |
| Idec | Ft1a Smartaxix Pro Firmware | <= 2.31 |
| Idec | Ft1a Smartaxix Lite Firmware | <= 2.31 |
References
- https://jvn.jp/en/vu/JVNVU92279973/Third Party Advisory
- https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdfVendor Advisory
- https://jvn.jp/en/vu/JVNVU92279973/Third Party Advisory
- https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdfVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-37401?
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.
How severe is CVE-2021-37401?
CVE-2021-37401 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.34% probability of exploitation in the next 30 days.
How do I fix CVE-2021-37401?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-37401?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST