Does the CVSS impact score correpond to probability?

Question

From http://nvd.nist.gov/cvsseq2.htm , I noticed that the CVSS standard attributes the following impact values ​​for confidentiality, integrity and availability: 0 for none impact , 0.275 for partial impact and 0.66 for complete impact. My question is the following : what theses scores really represent? Is these values correspond to probability ?

Answer 1

No, they do not. They are impact scores.

The page you linked to in your previous question on this details it: http://nvd.nist.gov/cvsseq2.htm

Answer 2

You can find a very thorough guide to CVSSv2 here http://www.first.org/cvss/cvss-guide.html. There is also the CVSSv2 calculator which links to the equations it uses.