CVE-2018-7856: High severity modicon premium firmware vulnerability
A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a possible denial of Service when writing invalid memory blocks to the controller over Modbus.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is CVE-2018-7856.
What is the severity level of CVE-2018-7856?
The severity level of CVE-2018-7856 is high with a score of 7.5 out of 10.
Which software versions are affected by CVE-2018-7856?
All versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium are affected.
How can CVE-2018-7856 be exploited?
CVE-2018-7856 can be exploited by writing invalid memory blocks to the controller over Modbus.
Where can I find more information about CVE-2018-7856?
You can find more information about CVE-2018-7856 at the following references: [Schneider-electric Advisory](https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/) and [Talos Intelligence Advisory](https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0767).