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EVM Logic Flaw

Definition ∞ An EVM Logic Flaw denotes a defect in the foundational programming or operational design of a smart contract or protocol operating within the Ethereum Virtual Machine. These flaws can compromise the security and intended functionality of decentralized applications. They represent a significant technical vulnerability.
Context ∞ The discovery of EVM logic flaws frequently leads to severe security incidents, including the exploitation of decentralized finance protocols and the loss of user assets. Rigorous security auditing, formal verification, and bug bounty programs are essential to mitigate these risks. Preventing such flaws is critical for maintaining trust in blockchain systems.

A futuristic spherical mechanism, partially open, reveals an intricate internal process. One side features a dense aggregation of white, granular elements, potentially representing raw data inputs or unconfirmed transaction batches. This transitions into a vibrant formation of sharp, blue crystalline structures, symbolizing processed data, validated blocks, or newly generated digital assets. The sophisticated protocol architecture suggests a secure environment for smart contract execution, emphasizing data integrity and network security within a distributed ledger technology framework. This visual metaphor encapsulates the dynamic transformation inherent in tokenomics and consensus mechanism operations.

→Critical Code Error

→Arithmetic Flaw

→Overflow Checking Bug

Decentralized Exchange Cetus Drained $223 Million Exploiting Smart Contract Overflow Flaw

A critical integer overflow vulnerability in the DEX's forked code allowed a malicious actor to manipulate liquidity checks, resulting in a $223 million asset drain.