Definition ∞ Arbitrary call execution means a program can run any instruction given to it, potentially unintended ones. In smart contracts, this refers to an external actor triggering unauthorized functions or code segments. This often stems from vulnerabilities in access control or input validation. It allows for operations beyond the contract’s intended scope.
Context ∞ Arbitrary call execution represents a severe security risk in decentralized applications, frequently leading to significant asset losses during exploits. News reports often highlight these vulnerabilities, emphasizing the critical need for rigorous smart contract auditing. Robust security practices are essential to prevent unauthorized command processing and protect user funds.
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