<p>Amid growing global concern over climate change, food security has become a central priority for policymakers and researchers, aligning with Sustainable Development Goal (SDG) 13 on Climate Action and SDG 2 on Zero Hunger. This research analyzes the effect of green finance, agricultural innovation, ICT, trade openness, and climate change on the multidimensional aspects of food security in 46 Sub-Saharan African countries from 2001 to 2023. Using panel data estimations including fixed effects, Method of Moments Quantile Regression, mediation analysis, Dumitrescu Hurlin causality tests, and system GMM, the study provides evidence on transmission channels. The baseline results indicate that green finance increases food and cereal production, while agricultural innovation emerges as the strongest determinant of agricultural productivity. ICT adoption and trade openness exert positive and significant effects, whereas temperature changes and natural disasters negatively affect food security outcomes. The MMQR results reveal heterogeneous effects, with green finance and innovation generating stronger marginal gains in low production countries. Extending the analysis to food availability, accessibility, utilization, and stability, the findings indicate that green finance improves cereal yield, enhances dietary energy supply adequacy, reduces undernourishment, and strengthens per capita food supply. Mediation analysis confirms that research and development, agricultural credit, farmer education, and foreign direct investment act as key transmission channels, while causality and dynamic results validate the persistence and structural nature of these interconnections. The findings underscore the importance of integrating sustainable finance, technological innovation, digitalization, and climate adaptation to achieve resilient and inclusive food security systems.</p> Graphical Abstract <p></p>