Use of hard-coded credentials in Schneider Electric products - CVE-2018-7241
Published: March 28, 2018
Vulnerability identifier: #VU11292
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-7241
CWE-ID: CWE-798
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Schneider Electric
Affected software:
Modicon X80 RTU
Modicon M340
Modicon Quantum
Modicon Premium
Modicon X80 RTU
Modicon M340
Modicon Quantum
Modicon Premium
Detailed vulnerability description
The vulnerability allows a remote authenticated attacker to bypass security restrictions on the target system.
The weakness exists due to the FTP servers contain a hard-coded account. A remote attacker can bypass security restrictions and gain unauthorized access to the system.
The weakness exists due to the FTP servers contain a hard-coded account. A remote attacker can bypass security restrictions and gain unauthorized access to the system.
How to mitigate CVE-2018-7241
NCCIC recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should:
- Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet.
- Locate control system networks and remote devices behind firewalls, and isolate them from the business network.
- When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that VPN is only as secure as the connected devices.