What are the three primary types of vulnerabilities in network security?

Technological, configuration, and security policy vulnerabilities.

1. Technological Vulnerabilities - TCP/IP protocol weaknesses, operating system weaknesses, network equipment weaknesses

2. Configuration Vulnerabilities - Unsecured user accounts, easily guessed passwords, misconfigured internet services, unsecure default settings, misconfigured network equipment

3. Security Policy Vulnerabilities - Lack of written security policy, politics, lack of authentication continuity, logical access controls not applied, nonexistent disaster recovery plan

Go deeper:

• Vulnerability (computer security) — Wikipedia — defines a vulnerability as a design/implementation/management weakness, mapping onto these technological, configuration, and policy classes.