The ciphertext-policy attribute-based encryption (CPABE) for cloud storage data sharing not only enhances multi-user access control but also safeguards the data privacy. Nevertheless, current CPABE schemes often face challenges when deployed for users with limited computational capabilities, such as in IoT environments, including long ciphertexts and the substantial overhead involved in revoking user attributes. To mitigate challenges, we propose a cloud storage data-sharing framework which incorporates fine-grained attribute revocation and weight exchangeability (RWE-CPABE) with direct revocation mechanism. The weight threshold is converted into a set of 0-encoded values, thereby reducing the length of the ciphertext. Additionally, attribute weights are transformed into a 1-encoding set, which minimizes the number of weight keys required. Incorporating a user list within the ciphertext enables, thereby obviating users' need to alter their keys and preventing a linear increase in revocation costs. Furthermore, we introduce a methodology for mapping similar attributes to a common secret value, which enables attribute weight exchange and broadens access policy options. By delegating certain decryption operations to servers, we alleviate the computational burden on data users. RWE-CPABE achieves adaptive chosen-ciphertext attack (CCA2) security in the standard model while demonstrating superior efficiency—reducing cipher text length by 32% and revocation costs to O(1) versus prior linear-growth approaches—making it ideal for resource-constrained cloud environments.