CVE-2021-20826

Published Dec 24, 2021

Last updated 3 years ago

Overview

Description
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 an attacker to 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.
Source
vultures@jpcert.or.jp
NVD status
Analyzed

Risk scores

CVSS 3.1

Type
Primary
Base score
7.6
Impact score
4.7
Exploitability score
2.8
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Severity
HIGH

CVSS 2.0

Type
Primary
Base score
3.3
Impact score
2.9
Exploitability score
6.5
Vector string
AV:A/AC:L/Au:N/C:P/I:N/A:N

Weaknesses

nvd@nist.gov
CWE-522

Social media

Hype score
Not currently trending

Configurations