CVE-2020-10920: C-MORE HMI EA9 Control Port Missing Authentication for Critical Function Remote Code Execution Vulnerability

Published Jul 23, 2020

Updated

This vulnerability allows remote attackers to execute arbitrary code on affected installations of C-MORE HMI EA9 Firmware version 6.52 touch screen panels. Authentication is not required to exploit this vulnerability. The specific flaw exists within the control service, which listens on TCP port 9999 by default. The issue results from the lack of authentication prior to allowing alterations to the system configuration. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-10493.

Other sources

This vulnerability allows remote attackers to execute arbitrary code on affected installations of C-More HMI EA9 touch screen panels. Authentication is not required to exploit this vulnerability. The specific flaw exists within the control service, which listens on TCP port 9999 by default. The issue results from the lack of authentication prior to allowing alterations to the system configuration. An attacker can leverage this vulnerability to execute code in the context of the device.

Affected Software

14 affected components

AutomationDirect C-more Hmi Ea9 Firmware=6.52

AutomationDirect EA9-PGMSW

AutomationDirect EA9-RHMI

AutomationDirect EA9-T10CL

AutomationDirect EA9-T10WCL

AutomationDirect EA9-T12CL

AutomationDirect EA9-T15CL

AutomationDirect EA9-T15CL-R

AutomationDirect EA9-T6CL

AutomationDirect EA9-T6CL-R

AutomationDirect EA9-T7CL

AutomationDirect EA9-T7CL-R

AutomationDirect EA9-T8CL

C-MORE HMI EA9

Event History

Jul 23, 2020

CVE Published

via MITRE·03:35 PM

Data Sourced

via MITRE·03:35 PM

DescriptionSeverityWeakness

Feb 23, 2026

Advisory Published

via ZDI·06:25 PM

Data Sourced

via ZDI·06:25 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

What is CVE-2020-10920?

CVE-2020-10920 is a vulnerability that allows remote attackers to execute arbitrary code on C-MORE HMI EA9 touch screen panels.

How severe is CVE-2020-10920?

CVE-2020-10920 has a severity rating of 9.8, which is considered critical.

Is authentication required to exploit CVE-2020-10920?

No, authentication is not required to exploit CVE-2020-10920.

What is the affected software?

The affected software is C-MORE HMI EA9 Firmware version 6.52 touch screen panels.

How can I fix CVE-2020-10920?

To mitigate CVE-2020-10920, it is recommended to update to a patched version of the C-MORE HMI EA9 firmware.