RSA2048 is 112-bit-equivalent symmetric security under currently known methods. Number theory advances may change that. It is hard to imagine any significant advances in the breaking of symmetric cryptography (mathematically-unstructured permutations).

Cryptographically-relevant quantum computers (CRQC's) will also break smaller RSA keys long before (years?) the bigger ones. CRQC's can theoretically halve symmetric cryptography keys for brute force complexity (256-bit key becomes 128-bit for a CRQC cracker).