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EUVD-2026-21896

fkie_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 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.

GHSA-hxfc-cc7r-hxxv

gsd-2021-20827

ICSA-22-006-03 — IDEC PLCs

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-2021-37400 has been assigned to this vulnerability. A CVSS v3 base score of 7.6 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L). 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-2021-37401 has been assigned to this vulnerability. A CVSS v3 base score of 7.6 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L). An attacker may obtain the PLC web server user credentials from the communication between the PLC and the software. As a result, the complete access privileges to the PLC web server may be obtained, and manipulation of the PLC output and/or suspension of the PLC may be conducted.CVE-2021-20826 has been assigned to this vulnerability. A CVSS v3 base score of 7.6 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L). An attacker may 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.CVE-2021-20827 has been assigned to this vulnera…

jvndb-2021-006117

Multiple PLCs provided by IDEC Corporation contain multiple vulnerabilities listed below. * Unprotected transport of credentials (CWE-523) - CVE-2021-37400 * Plaintext storage of a password (CWE-256) - CVE-2021-37401 * Unprotected transport of credentials (CWE-523) - CVE-2021-20826 * Plaintext storage of a password (CWE-256) - CVE-2021-20827 Khalid Ansari of FM Approvals reported these vulnerabilities to IDEC Corporation, and IDEC Corporation reported the case to JPCERT/CC and coordinated in order to notify users of the solutions through JVN.