A buffer overflow vulnerability has been found in XAMPP affecting version 8.2.4 and earlier. An attacker could execute arbitrary code through a long file debug argument that controls the Structured Exception Handler (SEH).

The installer in XAMPP through 8.1.12 allows local users to write to the C:\xampp directory. Common use cases execute files under C:\xampp with administrative privileges.

Xampp for Windows v8.1.4 and below was discovered to contain insecure permissions for its install directory, allowing attackers to execute arbitrary code via overwriting binaries located in the directory.

An issue was discovered in XAMPP before 7.2.29, 7.3.x before 7.3.16 , and 7.4.x before 7.4.4 on Windows. An unprivileged user can change a .exe configuration in xampp-contol.ini for all users (including admins) to enable arbitrary command execution.