The utilization of new technologies coupled with the digitization and automation of the construction industry (known as Construction 4.0) comes with many advantages. For example, it will make the Architecture Engineering and Construction (AEC) industry more connected, accessible, and transparent. However, the inherent nature of these connected systems will make construction networks more vulnerable and prone to cyberattacks. That will compromise not only the confidentiality of sensitive information but also the security of physical assets and project participants. With this background in mind, it is crucial to measure the security of construction networks. There are different systems to evaluate security vulnerabilities of a system, network, organization, or process; one of the most common is the Common Vulnerability Scoring System (CVSS), which provides a numerical score that reflects the severity of a given vulnerability based on specific identified metrics. This paper examines the application of CVSS to quantify and evaluate the vulnerability of project participants that can be used as the groundwork to determine the security vulnerability of construction networks. The objectives of this paper are 1) to examine the advantages and disadvantages of different scoring systems and their applicability to the AEC industry, 2) to systematically apply the identified system to determine scores for some of the most significant construction participants such as the owner, contractor, and worker. The proposed approach will help to assess the vulnerability of project participants and, eventually, the security level of construction networks.