Buffer Overflow
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May 1, 2024
Updated May 30, 2025
17 minute read
Understanding Buffer Overflow: A Comprehensive Guide
A buffer overflow is a type of software vulnerability that occurs when a program, while writing data to a buffer, overruns the buffer's boundary and overwrites adjacent memory locations. Buffers are temporary storage areas in memory designed to hold a fixed amount of data. When a program attempts to put more data into a buffer than it can hold, or tries to put data in a memory area past a buffer, this overflow can lead to erratic program behavior, including system crashes, data corruption, or, most critically, opportunities for malicious code execution. This makes buffer overflows a significant concern in software development and cybersecurity.
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