CODESYS V2 web server

Risk Summary

Successful exploitation of these vulnerabilities may allow an attacker to read or write arbitrary memory or files in the CODESYS Control runtime system, cause invalid memory accesses to execute code, or crash the CODESYS web server or CODESYS Control runtime system.

CVEs (6)

Remediations

• CODESYS GmbH has released Version 1.1.9.20 of the CODESYS V2 web server to address these vulnerabilities. This version of the CODESYS V2 web server is also part of the CODESYS Development System setup Version 2.3.9.66
• Please visit the CODESYS update area for more information on how to obtain the software updates.
• Use controllers and devices only in a protected environment to minimize network exposure, ensuring they are not accessible from outside.
• Use firewalls to protect and separate the control system network from other networks.
• Use VPN (virtual private network) tunnels if remote access is required.
• Activate and apply user management and password features.
• Use encrypted communication links.
• Limit access to both development and control system by physical means, operating system features, etc.
• Protect both development and control system operations by using up to date virus detecting solutions.
• For more information and general recommendations for protecting machines and plants, see also the CODESYS Security Whitepaper.
• Please see CODESYS Advisory 2021-07 for more information.

Affected Vendors

Affected Products (1)

Affected Sectors

Critical Manufacturing