Windows 11’s mysterious ‘inetpub’ folder might be more dangerous than we thought

In the realm of cybersecurity, maintaining the integrity of operating systems is paramount. Windows 11 users have been alerted to a potential vulnerability linked to the newly introduced inetpub folder, which came to light with the April 2025 security update. While Microsoft has assured users that this folder is harmless, security experts are urging caution.

The Harmless-Looking Folder in Windows 11 May Be Hackers’ Best Friend

Security researcher Kevin Beaumont has raised concerns about the inetpub folder, suggesting that it could be exploited by hackers to disable essential security updates. Beaumont’s analysis indicates that non-administrative users might easily halt future updates by creating “junction points” within the system’s directory. This method, while seemingly straightforward, poses significant risks to system security.

According to Beaumont, the process involves executing a command in the Command Prompt after establishing these junction points. However, the implications of this action could lead to installation errors or force a rollback to previous system states, as the command inadvertently triggers a denial of service (DoS) vulnerability within the Windows servicing stack.

What Did Microsoft Say About Windows 11’s inetpub Folder?

Initially introduced without much fanfare, the inetpub folder has since become a focal point of scrutiny. Microsoft clarified that the folder is part of a security patch, specifically CVE-2025-21204, and advised users against deleting it. The company maintains that removing the folder will not adversely affect system performance, yet skepticism remains among cybersecurity professionals.

As users navigate the complexities of system security, the inetpub folder serves as a reminder of the delicate balance between functionality and vulnerability. The ongoing discourse surrounding this folder underscores the importance of vigilance and proactive measures in safeguarding digital environments.

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Windows 11's mysterious ‘inetpub’ folder might be more dangerous than we thought