Main Vulnerability Database Vulnerabilities #VU21499

Improper access control in Schneider Electric products - CVE-2018-7847

Published: October 3, 2019

Vulnerability identifier: #VU21499

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-7847

CWE-ID: CWE-284

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote attacker can overwrite configuration settings of the controller over Modbus and cause a denial of service condition or potential code execution on the target system.

Affected software

Modicon Quantum
Modicon Premium
Modicon M340
Modicon M580

How to mitigate CVE-2018-7847

Install updates from vendor's website.

Modicon M340 - update to 3.10
Modicon M580 - update to 2.90

External References

Related Security Bulletins