CVE-2021-22786

Published: Feb 1, 2023

Modified: Feb 5, 2025

PUBLISHED

CVSS v3.1

7.5

HIGH

Description

A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol. Affected Products: Modicon M340 CPU (part numbers BMXP34*) (Versions prior to V3.30), Modicon M580 CPU (part numbers BMEP* and BMEH*) (Versions prior to SV3.20), Modicon MC80 (BMKC80) (Versions prior to V1.6), Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S) (All Versions), Modicon Momentum MDI (171CBU*) (Versions prior to V2.3), Legacy Modicon Quantum (All Versions)

Vendor	Product	Versions
Schneider Electric	Modicon M340 CPU (part numbers BMXP34*)	affected `All - < V3.30`
Schneider Electric	Modicon M580 CPU (part numbers BMEP* and BMEH*)	affected `All - < V3.20`
Schneider Electric	Modicon M580 CPU Safety (part numbers BMEP58S and BMEH58S)	affected `All Versions`
Schneider Electric	Modicon MC80 (BMKC80)	affected `All - < V1.6`
Schneider Electric	Modicon Momentum CPU (171CBU*)	affected `All - < V2.3`
Schneider Electric	Legacy Modicon Quantum	affected `All Versions`

Weaknesses (CWE)

CWE-200

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

References

https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2022-221-04&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2022-221-04-Modicon_Controllers_Ethernet_Modules_Security_Notification.pdf

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