Security · Website glossary

Vulnerability

Quick answer · What is Vulnerability?

A weakness that can be exploited to violate a system's intended security properties.

IN PRACTICE

Vulnerability: an example

An application flaw lets an unauthorized visitor access information intended for another account.

KEEP IN MIND

A vulnerability report does not prove exploitation occurred; exposure and incident evidence are separate questions.

Put the idea to work

Frequently asked questions

What is a practical example of Vulnerability?

An application flaw lets an unauthorized visitor access information intended for another account.

Does a vulnerability report prove that exploitation occurred?

A vulnerability report does not prove exploitation occurred; exposure and incident evidence are separate questions.

Which concepts should I read alongside Vulnerability?

Security update: A software release or patch intended to address identified security weaknesses.
Incident response: A coordinated process for assessing, containing, investigating, and recovering from a suspected security incident.