CVE-2021-20826

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.6 HIGH
ADJACENT_NETWORK
LOW
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
jpcertCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 26%
VendorProductVersion
idecmicrosmart_fc6a_firmware
𝑥
≤ 2.32
idecmicrosmart_plus_fc6a_firmware
𝑥
≤ 1.91
idecdata_file_manager
𝑥
≤ 2.12.1
idecwindedit
𝑥
≤ 1.3.1
idecwindldr
𝑥
≤ 8.19.1
𝑥
= Vulnerable software versions