• Disable SSH when possible
• Limit remote access to the SSH port (default: 22/tcp) to trusted systems only
• Change the default SSH port (22/tcp) to a nonstandard port to minimize success of automated attacks

Product-specific remediations or mitigations can be found in the section Affected Products and Solution.
Please follow the General Security Recommendations.

As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity

This chapter describes all vulnerabilities (CVE-IDs) addressed in this security advisory. Wherever applicable, it also documents the product-specific impact of the individual vulnerabilities.

For SINUMERIK ONE:

• This vulnerability can be triggered on all SINUMERIK interfaces (X120, X127, X130) if the ssh port is open to get root access.
• Updated software version can be obtained from Siemens customer support or a local partner.