# Cetus $220M AMM overflow

Canonical URL: https://manyaitool.com/products/cetus
Markdown URL: https://manyaitool.com/products/cetus/index.md
Product URL: https://github.com/duolaAmengweb3/DuoLaSafe-Audits/blob/main/%E9%93%BE%E4%B8%8A%E8%B0%83%E6%9F%A5/Cetus-220M-AMM%E6%BA%A2%E5%87%BA.md
Category: Security
Updated: 2026-06-29

## Summary

Sui's largest AMM: a wrong overflow mask in checked_shlw (0xffff…<<192 vs 1<<192) let a u256 left-shift silently truncate, minting ~1.03e34 liquidity for ~1 token to drain reserves. ~$220M lost; ~$162M frozen by validators and returned via governance.

## What It Is

Cetus $220M AMM overflow is part of 哆啦A梦的百宝箱 · Doraemon Toolbox, a product-factory toolbox for AI, Web3, prediction-market, perpetual DEX, stock research, developer and browser utility workflows.

## Who It Helps

Users who want focused web tools that compress scattered market data, AI workflows, developer tasks, or everyday browser utilities into a single usable page.

## AI Search Summary

Cetus $220M AMM overflow is a security product. Its main purpose is: Sui's largest AMM: a wrong overflow mask in checked_shlw (0xffff…<<192 vs 1<<192) let a u256 left-shift silently truncate, minting ~1.03e34 liquidity for ~1 token to drain reserves. ~$220M lost; ~$162M frozen by validators and returned via governance.