CVEvulnerability

CVE-2021-20826

7.6 HIGH Published 2021-12-24 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-12-24
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.6 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
CVSS 2.0 ([email protected])
3.3 LOW — AV:A/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-522

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.

Affected configurations

• 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)

Related

Weakness · CWE (1)

  • CWE-522 Insufficiently Protected Credentials weakness

References