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Cetus CLMM

May 22, 2025

$223M
Lost
$223M
Recovered
$0
Net loss
$223M
Unrecovered0% recovered

Cetus CLMM on Sui suffered a math error in its checked_shlw function where an incorrect overflow threshold (0xffffffffffffffff << 192 instead of 1 << 192) allowed attackers to craft positions with phantom liquidity. Using flashloans to manipulate prices and create tight tick ranges, attackers minted enormous liquidity while depositing minimal real tokens, then withdrew actual reserves.

Target
DeFi
Classification
Token & Share Accounting
Technique
Arithmetic Error
Attribution
Unknown
Chains
Sui

Event timeline

  1. May 22, 2025
    Exploit executed — $223M drained via arithmetic error
  2. Attributed to Unknown
  3. Recovery status Unrecovered 0%

Data credits

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