CVE Tools
Sign in

CVE-2020-20741

Published: Jul 23, 2021Updated: Nov 21, 2024 Sources: CVE List NVDNVD-CWE-Other
9.8CRITICAL
NVD MITRE
EPSS Score
1.6%
Top 27.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
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
Open in CVSS calculator →

Weaknesses

NVD-CWE-Other

Affected Products

beckhoff
commercialaka twincat, twincat/bsd
cx9020Embedded
ICS / OT / IoT / plc-scada-hmi
and 1 more affected products View all →

Exploitability

Workaround Available
Is your org exposed to CVE-2020-20741?We can run the check for you — a free external exposure review, no install. Check my exposure

References

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

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2020-20741 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows