Threat Value VS Vulnerability Value

Answer: First, let's start with the relation between them. According ISO 27000 (Overview and vocabulary), threat is a potential cause of an incident, something that can harm an organization, system or asset (e.g., fire, malicious software, industrial espionage, etc.). A vulnerability is a weakness in an element (e.g, an asset or control) that can be exploited by one or more threats (e.g., lack of training, careless software development, etc.). So, they are separate things and if one has a high value it does not mean the other will automatically have a high value too.

Regarding how to evaluate threats and vulnerabilities values, some common used criteria are:
- Threats: how many vulnerabilities it can exploit, how easy it is to be used, how many resources it requires.
- Vulnerabilities: how well are they known, how easy they are to be exploited, how easy they to can be accessed by an attacker.

These articles will provide you further explanation about threats and vulnerabilities:
- ISO 27001 risk assessment: How to match assets, threats and vulnerabilities https://advisera.com/27001academy/knowledgebase/iso-27001-risk-assessment-how-to-match-assets-threats-and-vulnerabilities/
- Catalogue of threats & vulnerabilities https://advisera.com/27001academy/knowledgebase/threats-vulnerabilities/

These materials will also help you regarding threats and vulnerabilities:
- Book ISO 27001 Risk Management in Plain English https://advisera.com/books/iso-27001-annex-controls-plain-english/
- Free online training ISO 27001 Foundations Course https://advisera.com/training/iso-27001-foundations-course/