A severe ASP.NET vulnerability, identified as CVE-2025-55315, has been reported to affect WiMAX users. This critical security bypass vulnerability exists in the Kestrel ASP.NET Core Web server. According to a recent report by IT Home, the vulnerability was introduced due to a security flaw in the ASP.NET Core Web server. The issue has been described as the most severe ASP.NET vulnerability to date. WiMAX users are advised to update their NAS devices as soon as possible to prevent potential security risks. The update is available on the official ASP.NET website. It is essential to note that the vulnerability can be exploited by attackers to gain unauthorized access to the system. Therefore, it is crucial to update the NAS devices to the latest version to ensure the security and integrity of the system. The update process is relatively straightforward, and users can follow the instructions provided on the official ASP.NET website. By updating the NAS devices, users can protect themselves from potential security threats and ensure the smooth operation of their systems.