CVE-2021-20826
HIGHIDEC PLCs <v2.32 - Info Disclosure
Title source: llmDescription
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.
Scores
CVSS v3
7.6
EPSS
0.0009
EPSS Percentile
25.4%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Classification
CWE
CWE-522
Status
published
Affected Products (5)
idec/microsmart_fc6a_firmware
< 2.32
idec/microsmart_plus_fc6a_firmware
< 1.91
idec/data_file_manager
< 2.12.1
idec/windedit
< 1.3.1
idec/windldr
< 8.19.1
Timeline
Published
Dec 24, 2021
Tracked Since
Feb 18, 2026