Damage -

Rating fo the attack ? Damage level

Reproducibility -

Repetablity of same. will it happen due to a random error or repetable?

Exploitability -

how much ground work requred to launch the attack?

Affected users -

What is the imact? how many people will be impacted?  How sensitive is the data in question?

Discoverability -

how easy it is to discover/trace the origin of attack ?