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Prosys OPC UA Modbus Server 1.4.4 released

04.05.2021


We have released a new 1.4.4 version of the Prosys OPC UA Modbus Server. This is a security release. Due to an implementation error, user authorization checks were not performed and all username & password combinations and user certificates were always granted access, if the respective authentication methods were enabled. Affected versions are 1.2.x, 1.3.x and 1.4.x (older than this release).

We recommend everyone to update to this version.

Note that while the error is critical, it does impact you only if user authorization played a role in the way you use the application. The application doesn’t have user specific data and most use cases of OPC UA typically use just Application Level Authentication with the Anonymous user authentication mode.

Read more at the release notes »

Find out more about OPC UA Modbus Server at the product page »

About Prosys

Prosys is a leading provider of professional OPC software and services with over 10 years of experience in the field. OPC and OPC UA (Unified Architecture) are communications standards used especially by industrial and high-tech companies.

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