In today's rapidly evolving digital landscape, organisations face escalating cyber threats that can disrupt operations, compromise sensitive data, and inflict financial and reputational harm. A key reason for this lies in the organisations' lack of a clear understanding of their cybersecurity capabilities, leading to ineffective defences. To address this gap, Cybersecurity Capability Maturity Models (CCMMs) provide a systematic approach to assessing and enhancing an organisation's cybersecurity posture by focusing on capability maturity rather than merely implementing controls. However, their limitations, such as rigid structures, one-size-fits-all approach, complexity, gaps in security scope (i.e., technological, organisational, and human aspects) and lack of quantitative metrics, hinder their effectiveness. It makes implementing CCMMs in varying contexts challenging and results in fragmented, incomprehensive assessments. Therefore, we propose a novel Cybersecurity Capability Maturity Framework that is holistic, flexible, and measurable to provide organisations with a more relevant and impactful assessment to enhance their cybersecurity posture.