CriticalHighMediumLow
CriticalHighMediumLow is a four-tier framework used to classify issues, incidents, vulnerabilities, and tasks by their impact and urgency. It is widely used in information technology, software development, cybersecurity, and risk management to guide triage and resource allocation. While not a universal formal standard, the four levels provide a compact shorthand that teams can apply across disciplines.
The levels are typically defined as Critical, High, Medium, and Low. Critical issues cause complete outages,
Definitions and SLAs vary by organization, and some teams pair the scale with color codes or separate
Using CriticalHighMediumLow supports prioritization, backlog management, and service-level commitments by communicating urgency clearly to stakeholders. It