Threatline

The $9M yETH Exploit: How 16 Wei Became Infinite Tokens

By: Dikla Barda, Roman Zaikin, and Oded Vanunu On November 30, 2025, Check Point Research detected a critical exploit targeting Yearn Finance’s yETH pool on Ethereum. Within hours, approximately $9 million was stolen from the protocol. The attacker achieved this by minting an astronomical number of tokens—235 septillion yETH (a 41-digit number)—while depositing only 16 […] The post appeared first on . The $9M yETH Exploit: How 16 Wei Became Infinite Tokens Check Point Research