Balancer Finally Explains the $128M Hack: A Hidden Rounding Error in Code

Balancer has confirmed that a subtle rounding error buried deep in its V2 smart contract logic was the root cause of a devastating multi-chain exploit on November 3, 2025. The vulnerability, which went undetected for years despite multiple audits, allowed an attacker to siphon roughly $128 million worth of assets across seven blockchain networks. source: https://www.ethnews.com/balancer-finally-explains-the-128m-hack-a-hidden-rounding-error-in-code/