On June 7, 2024, a new critical PHP vulnerability CVE-2024-4577 was revealed, mainly impacting XAMPP on Windows. It happens when PHP runs in CGI mode with specific language settings, like Chinese or Japanese. The problem comes from how PHP handles certain characters, allowing attackers to inject code through web requests and take control of servers. This vulnerability, if exploited, could lead to the execution of arbitrary code, a scenario with severe consequences for system integrity and data security.