Vulnerability detection method and device based on optimization variation strategy, equipment and medium

The invention provides a vulnerability detection method and device based on an optimization variation strategy, equipment and a medium. The method comprises the following steps: acquiring a source code of a target application program; compiling and instrumenting the source code to obtain an internal variable and a judgment condition of each branch in the structure of the source code, and forming a branch-internal variable mapping relationship; performing byte-by-byte change on each input byte included in an input variable of the target application program, determining an internal variable which changes along with the changed input byte in the source code, and obtaining an input byte-internal variable mapping relationship; based on the branch-internal variable mapping relationship and the input byte-internal variable mapping relationship, generating the optimization variation strategy about the input bytes; and performing fuzzy testing on the source code based on the optimization variation strategy to obtain a