CVE-2020-20741

Published: Jul 23, 2021Updated: Nov 21, 2024 Sources: CVE List NVDNVD-CWE-Other

NVD MITRE

9.8CVSSCRITICAL

EPSS Score

Description

Incorrect Access Control in Beckhoff Automation GmbH & Co. KG CX9020 with firmware version CX9020_CB3011_WEC7_HPS_v602_TC31_B4016.6 allows remote attackers to bypass authentication via the "CE Remote Display Tool" as it does not close the incoming connection on the Windows CE side if the credentials are incorrect.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

NVD-CWE-Other

Affected Products

n/a n/a

cx9020 beckhoff

Embedded

ICS / OT / IoT / plc-scada-hmi

beckhoffcommercialICS / OT / IoTaka twincat, twincat/bsd

Exploitability

Workaround Available

References

https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2019-006.pdf

download.beckhoff.com

Timeline

Published

Jul 23, 2021

Last Updated

Nov 21, 2024

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