Microsmart Plus Fc6A Firmware Security Vulnerabilities - January

CVE-2021-20826

Unprotected transport of credentials 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...

CVE-2021-20827

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 a...

CVE-2021-37400

An attacker may obtain the user credentials from the communication between the PLC and the software. As a result, the PLC user program may be uploaded, altered, and/or downloaded.

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.

CVE-2024-41927

Cleartext transmission of sensitive information vulnerability exists in multiple IDEC PLCs. If an attacker sends a specific command to PLC's serial communication port, user credentials may be obtained. As a result, the program of the PLC may be obtained, and the PLC may be manipulated.