New CVSS 4.0 vulnerability severity rating standard released

New CVSS 4.0 vulnerability severity rating standard released

November 1, 2023 at 03:32PM

FIRST has released CVSS v4.0, the latest version of its Common Vulnerability Scoring System standard after eight years. CVSS provides a framework for assessing the severity of software security vulnerabilities, helping prioritize responses to security threats. The new version offers finer granularity, removes scoring ambiguity, simplifies metrics, and adds supplemental metrics for vulnerability assessment. It also introduces new severity ratings and expands applicability to OT/ICS/IoT.

Key Points from the Meeting Notes:

– The Forum of Incident Response and Security Teams (FIRST) has released CVSS v4.0, the next generation of its Common Vulnerability Scoring System standard.
– CVSS is a framework for assessing software security vulnerabilities based on factors like exploitability, impact, and required privileges.
– The new version offers finer granularity in base metrics, removes scoring ambiguity, simplifies threat metrics, and enhances security requirements assessment.
– Supplemental metrics for vulnerability assessment have been added, including Automatable, Recovery, Value Density, Vulnerability Response Effort, and Provider Urgency.
– CVSS v4.0 now includes applicability to OT/ICS/IoT, with safety metrics added.
– A new nomenclature has been introduced, with severity ratings for Base, Base + Threat, Base + Environmental, and Base + Threat + Environmental.
– CVSS 4.0 was unveiled during FIRST’s annual conference in Montréal, Canada.
– FIRST CEO Chris Gibson expressed pride in the development of CVSS 4.0 and emphasized the need to defend against rising cyber threats.
– LAST year, FIRST also released TLP 2.0, an updated version of its Traffic Light Protocol used in the CSIRT community for sharing sensitive information.

Please let me know if you need any further information or if there are any specific points you would like to discuss regarding the meeting notes.

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