What Does Vulnerability Mean?

Vulnerability is a cyber-security term that refers to a flaw in a system that can leave it open to attack. A vulnerability may also refer to any type of weakness in a computer system itself, in a set of procedures, or in anything that leaves information security exposed to a threat.

Techopedia Explains Vulnerability

Vulnerabilities a. re what information security and information assurance professionals seek to reduce. Cutting down vulnerabilities provides fewer options for malicious users to gain access to secure information.