The AR4 and AR5 each also evaluated the most important climate risks, framed firstly in terms of the state of knowledge relevant to Article 2 of the UNFCCC. The TAR first synthesised this knowledge in five RFCs. AR4 identified a set of 'key vulnerabilities' and provided an update of the RFCs. AR5 further refined a new risk framework developed in the IPCC Special Report on Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation , and used it to assess 'key risks' and provide another update of the overarching RFCs, drawing as well on Cramer et al.'s  assessment of observed changes.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report