Those scenarios contain records of CVEs, Malware, crashes, etc.
They can be imported in your REVEN instance for analysis.
Don't have REVEN yet? Head to the Try REVEN section for a first experience.
Scenarios to import in REVEN
How to use those scenarios with my instance of REVEN?
You have to import those scenarios into your instance of REVEN before replaying and analyzing them. The documentation describes this process.
What if I don't have REVEN?
Some of those scenarios are also available in the Try REVEN section of this website which provides a cloud instance of REVEN.