> There is reduced performance or interruptions in resource availability. An example is a network-based flood attack that permits a limited number of successful connections to an Internet service.
Quote from the CVSS specification
Vulnerabilities with this tag were given a CVSS rating as part of the
requirement to be included into the [National Vulnerability
Database](https://nvd.nist.gov/). You can learn more about what the individual
scores mean in the [CVSS specification