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JpcertCVELIST:CVE-2021-20827

HistoryDec 24, 2021 - 6:30 a.m.

CVE-2021-20827

2021-12-2406:30:27

jpcert

www.cve.org

cve-2021-20827

idec plc

plaintext storage

password vulnerability

web server

user credentials

file servers

backup repositories

zld files

sd cards

hijack

manipulation

suspension

AI Score

7.7

Confidence

High

EPSS

0.002

Percentile

55.6%

JSON

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.

CNA Affected

[
  {
    "product": "IDEC PLC",
    "vendor": "IDEC Corporation",
    "versions": [
      {
        "status": "affected",
        "version": "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"
      }
    ]
  }
]

References

jvn.jp/en/vu/JVNVU92279973/index.html

www.idec.com/home/lp/pdf/2021-12-24-PLC.pdf