5 × 5 Risk Assessment Matrix
Likelihood
1
Minor
2
Low
3
Moderate
4
High
5
Major
5
Likely
5
10
15
20
25
4
Probable
4
8
12
16
20
3
Possible
3
6
9
12
15
2
Unlikely
2
4
6
8
10
1
Rare
1
2
3
4
5
Impact
Low (1–6)
Medium (7–12)
High (13–16)
Critical (17–25)