Integer Overflows and Underflows Course

This course introduces integer overflow and underflow vulnerabilities, their exploitation and possible mitigations.

54 minutes

Course description

Integer overflow and underflow vulnerabilities are caused by misuse of the various types of variables available in most programming languages. Understanding how to identify these vulnerabilities and how they can be exploited can prevent an attacker from bypassing checks or triggering other vulnerabilities (like buffer overflows).


Integer Overflow Demo

Video - 00:07:00

This video demonstrates exploitation of integer overflow vulnerabilities.
Integer Overflow and Underflow Mitigations

Video - 00:07:00

This video describes mitigations for integer overflow and underflow vulnerabilities.
Overflows and Underflows Case Study

Video - 00:06:00

This video describes a case study of an application containing an integer overflow vulnerability.
Overflow and Underflow Exploitation

Video - 00:07:00

This video describes how integer overflow and underflow vulnerabilities can be exploited by an attacker.
Integer Overflows and Underflows

Video - 00:15:00

This video describes how integer overflow and underflow vulnerabilities can make an application vulnerable to attack.
Introduction to Variables

Video - 00:09:00

This video covers the fundamentals of variables.
Introduction to Integer Overflows and Underflows

Video - 00:02:00

This video provides an introduction to the integer overflows and underflows course.

Meet the author

Howard Poston

Howard Poston is a copywriter, author, and course developer with experience in cybersecurity and blockchain security, cryptography, and malware analysis. He has an MS in Cyber Operations, a decade of experience in cybersecurity, and over five years of experience as a freelance consultant providing training and content creation for cyber and blockchain security. He is also the creator of over a dozen cybersecurity courses, has authored two books, and has spoken at numerous cybersecurity conferences. He can be reached by email at or via his website at

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