Framework overlap

Does ISO 27005 cover ISO 22301:2019?

You hold ISO 27005 and have been told to do ISO 22301:2019. Here is how much overlaps, control by control.

33% of ISO 22301:2019 you already have

ISO 27005 already covers about 33% of ISO 22301:2019, leaving 26 of 39 controls as genuinely new work.

Already covered 1 Likely covered 12 New work 26

What is genuinely new work

Nothing in ISO 27005 reaches these. This is the list to scope.

4.1
Understanding the organization and its context
4.2
Understanding the needs and expectations of interested parties
4.3
Determining the scope of the management system
4.4
Management system
5.2
Policy
5.3
Roles, responsibilities and authorities
6.2
Objectives and planning to achieve them
7.1
Resources
7.2
Competence
7.3
Awareness
7.5
Documented information
7.5.2
Creating and updating
7.5.3
Control of documented information
8.3
Business continuity strategies and solutions
8.3.2
Identification of strategies and solutions
8.3.3
Selection of strategies and solutions
8.3.5
Implementation of solutions
8.4
Business continuity plans and procedures
8.4.2
Response structure
8.4.3
Warning and communication
8.4.4
Business continuity plans
8.4.5
Recovery
8.5
Exercise programme
8.6
Evaluation of business continuity documentation and capabilities
9.2
Internal audit
9.3
Management review
Show the 13 you already have
6.1.3
Risk treatment
10.1
Continual improvement
10.2
Nonconformity and corrective action
5.1
Leadership and commitment
6.1
Actions to address risks and opportunities
6.1.2
Risk assessment
7.4
Communication
8.1
Operational planning and control
8.2
Business impact analysis and risk assessment
8.2.2
Business impact analysis
8.2.3
Risk assessment
8.3.4
Resource requirements
9.1
Monitoring, measurement, analysis and evaluation

How this is calculated

Already covered means a mapping runs from a control in ISO 27005 to that control. Likely covered means no direct mapping exists but both frameworks map to the same control in a third standard. New work means neither. We keep those separate rather than adding them into one friendlier number, because blending them would present a two-hop inference as a verified fact.

Coverage is not symmetric. Run it the other way and you will get a different number; both are correct.

From 332,959 cross-framework control mappings across 723 frameworks, 531 of them verified against their source documents. It does not tell you that you are compliant: a mapped control means the two standards ask for the same thing, not that you have done it.

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