Digital agriculture is undergoing a major transformation with the increasing use of information and communication technologies (ICT). This transformation has made cybersecurity a critical component in agricultural production and supply chains. This study aims to deeply examine the cyber security vulnerabilities in the supply chain of digital agriculture and propose a maturity model to deal with these vulnerabilities. The findings from the literature review, expert opinions and extensive analysis reveal the diversity and complexity in digital agriculture systems. The proposed cybersecurity maturity model aims to increase the resilience of enterprises against cyber threats and ensures that security measures are gradually implemented and continuously monitored to effectively combat these threats. This work is a critical milestone in the future evolution of digital agriculture and can contribute to the safe and sustainable progress of digitalization in the agricultural sector. Effective implementation of cybersecurity strategies can improve the sustainability and efficiency of agricultural production processes, thus strengthening the overall competitiveness of the sector.