Bitcoin Core Fixes Critical Memory Bug in Secret, Leaving Older Nodes at Risk

Bitcoin Core silently patched CVE-2024-52911, its first memory security bug, before publicly disclosing it this week. The flaw affected all versions from 0.14.0 through 28.x and allowed a miner to remotely crash nodes with invalid blocks. Around 43% of active nodes would still be running software prior to version 29.0, leaving them exposed.