The Vulnerability Relationship Prediction Research for Network Risk Assessment

Network risk assessment should include the impact of the relationship between vulnerabilities, in order to conduct a more in-depth and comprehensive assessment of vulnerabilities and network-related risks. However, the impact of extracting the relationship between vulnerabilities mainly relies on manual processes, which are subjective and inefficient. To address these issues, this paper proposes a dual-layer knowledge representation model that combines various attributes and structural information of entities. This article first constructs a vulnerability knowledge graph and proposes a two-layer knowledge representation learning model based on it. Secondly, in order to more accurately assess the actual risk of vulnerabilities in specific networks, this paper proposes a vulnerability risk calculation model based on impact relationships, which realizes the risk assessment and ranking of vulnerabilities in specific network scenarios. Finally, based on the research on automatic prediction of the impact relationship between vulnerabilities, this paper proposes a new Bayesian attack graph network risk assessment model for inferring the possibility of device intrusion in the network. The experimental results show that the model proposed in this study outperforms traditional evaluation methods in relationship prediction tasks, demonstrating its efficiency and accuracy in complex network environments. This model achieves efficient resource utilization by simplifying training parameters and reducing the demand for computing resources. In addition, this method can quantitatively evaluate the success probability of attacking specific devices in the network topology, providing risk assessment and defense strategy support for network security managers.