CVE-2021-20827

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2021-20827
  • Assigner
  • vultures@jpcert.or.jp
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-12-24T07:15:06
  • Last Modified Date
  • 2022-01-11T18:42:32
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:idec:microsmart_fc6a_firmware:*:*:*:*:*:*:*:* 1 OR 2.32
cpe:2.3:h:idec:microsmart_fc6a:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:idec:microsmart_plus_fc6a_firmware:*:*:*:*:*:*:*:* 1 OR 1.91
cpe:2.3:h:idec:microsmart_plus_fc6a:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:idec:data_file_manager:*:*:*:*:*:*:*:* 1 OR 2.12.1
cpe:2.3:a:idec:windedit:*:*:*:*:*:*:*:* 1 OR 1.3.1
cpe:2.3:a:idec:windldr:*:*:*:*:*:*:*:* 1 OR 8.19.1
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdf Vendor Advisory
https://jvn.jp/en/vu/JVNVU92279973/index.html Third Party Advisory
History
Created Old Value New Value Data Type Notes
2022-05-10 06:37:49 Added to TrackCVE
2022-12-06 04:48:57 2021-12-24T07:15Z 2021-12-24T07:15:06 CVE Published Date updated
2022-12-06 04:48:57 2022-01-11T18:42:32 CVE Modified Date updated
2022-12-06 04:48:57 Analyzed Vulnerability Status updated