CVE-2021-22779 Information

Description

Authentication Bypass by Spoofing vulnerability exists in EcoStruxure Control Expert (all versions prior to V15.0 SP1 including all versions of Unity Pro) EcoStruxure Control Expert V15.0 SP1 EcoStruxure Process Expert (all versions including all versions of EcoStruxure Hybrid DCS) SCADAPack RemoteConnect for x70 (all versions) Modicon M580 CPU (all versions - part numbers BMEP and BMEH) Modicon M340 CPU (all versions - part numbers BMXP34) that could cause unauthorized access in read and write mode to the controller by spoofing the Modbus communication between the engineering software and the controller.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Reference

http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-01

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

NONE

Base Severity

9.1