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Precision Loss Exploit

Definition

A precision loss exploit occurs in smart contracts when calculations involving floating-point numbers or fixed-point arithmetic lose accuracy due to rounding errors or truncation. This subtle flaw can lead to discrepancies in asset balances or unintended logic execution, which malicious actors can then manipulate for financial gain. Such vulnerabilities often arise from improper handling of decimal values in Solidity or other smart contract languages. The exploit leverages the system’s inability to represent fractional amounts precisely.