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CVE-2020-20741

CRITICAL
9.8
CVSS Score
Published: July 23, 2021 at 07:25 PM UTC
Updated: June 17, 2026 at 03:03 AM UTC
1 product affected across 1 vendorCX9020

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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCMitigationPatchVendor Advisory
Source: [email protected]
https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2019-006.pdf

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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