Likelihood
Almost certain5
Likely4
Possible3
Unlikely2
Rare1
1Negligible
2Minor
3Moderate
4Major
5Severe
Impact
Low ≥ 1Medium ≥ 6High ≥ 12Critical ≥ 20Acceptable ≤ 5
This assessment keeps its own copy of the methodology. Changes in the methodology library never rewrite it.