Bitcoin Core bug allowed miners to crash nodes and run code; 43% of nodes still vulnerable despite patches.

A critical bug (CVE-2024-52911) in Bitcoin Core versions 0.14.1 to 28.4 allowed miners to crash nodes and potentially execute remote code by mining special blocks. The flaw was fixed in version 29.0, but around 43% of nodes have not upgraded and remain exposed. The attack was costly and unattractive, which likely prevented exploitation. Bitcoin Core developers disclosed the bug publicly after ensuring the patch was widely adopted, urging node operators to update to secure the network.