Addressing vulnerabilities is a crucial aspect of maintaining secure computer networks. Commercial product costs are sometimes too high for organizations in the public sector, while manual vulnerability management is too labor-intensive. This thesis will, therefore, explore the possibilities of utilizing existing monitoring solutions deployed in the infrastructure, specifically Zabbix used in Masaryk University infrastructure monitoring, to discover vulnerabilities. It will utilize open-source tools and libraries to process data from Zabbix agents and develop a tool for vulnerability management usable in large organizations.

The aims of this thesis are the following:

• Create an overview of open-source vulnerability management tools.
• Create Zabbix server templates and agent configuration to gather information about the systems.
• Implement a tool to analyze gathered data for vulnerabilities.
• Implement a persistent storage for the discovered vulnerabilities.
• Implement an API to access the resulting data.
• Test the developed solution in the real environment of Masaryk University.