Check Point Advisories

Schneider-Electric Modicon Denial of Service (CVE-2019-6842; CVE-2019-6843; CVE-2019-6844)

Vulnerability
Protection

Check Point Reference:	CPAI-2019-3272
Date Published:	14 Apr 2025
Severity:	Medium
Last Updated:	Monday 14 April, 2025
Source:
Industry Reference:	CVE-2019-6842 CVE-2019-6843 CVE-2019-6844
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Schneider-Electric Modicon M580 firmware Schneider-Electric Modicon M340 firmware Schneider-Electric Modicon 140CRA firmware Schneider-Electric Modicon BMxCRA firmware
Vulnerability Description	A denial-of-service vulnerability exists in Schneider-Electric Modicon. Successful exploitation of this vulnerability would allow a remote attacker to create a denial of service condition on the affected system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Schneider-Electric Modicon Denial of Service protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: SCADA Protection Violation.
Attack Information: Schneider-Electric Modicon Denial of Service