ApeBond's ApeYieldVault smart contract on BSC was exploited. The attacker used a public helper contract to call migrateToVotingEscrow with duplicate pool IDs, inflating a lock amount from ~1.71 quadrillion ABOND to ~29 quadrillion ABOND. They then unlocked, claimed the inflated lock, sold ABOND in the public ABOND/WBNB pool, repaid a Moolah flashloan, and kept ~5.72 WBNB profit. The entire flow was permissionless and on-chain.