In this article we describe the solution to make an estimate of allowed alternations in model components parameters that make up a data processing and control system. They reflect properties of physical and information components of the aforementioned system. This solution is derived according to the limitations of possible changes in integral property that describes the system behavior in different modes of operation. The proposed solution makes it possible to solve not only the direct problem -making a conclusion whether the vulnerability of the data processing system is negligible with respect to alternations in parameters of this systems components but the inverse as well, finding tolerable levels in alterations in systems components parameters from an acceptable level of uncertainty of targeted efficiency. The proposed solution follows known demands: inner properties of the system must be so that customer demands are fulfilled.