A security problem in Windows could allow your computer to be hijacked

A critical vulnerability in Microsoft Remote Desktop Client, identified as CVE-2025-48817, could allow attackers to execute arbitrary code on victims’ systems. This flaw affects multiple versions of Windows, posing a significant threat to organizations that rely on connections through the Remote Desktop Protocol (RDP).

Although simple, it requires us to do our part

Classified as a “relative path traversal” vulnerability and inadequate access control, CVE-2025-48817 has a CVSS score of 8.8, placing it in a high severity category. The attack vector is identified as low complexity and requires user interaction; no prior privileges are necessary for exploitation. However, the success of an attack depends on the victim connecting to a compromised remote desktop server.

The attack is carried out through a man-in-the-middle scenario, where malicious actors control the server. Once the victim establishes a connection with the compromised server, the vulnerability allows attackers to escape the intended directory restrictions and execute code remotely, which can seriously impact the confidentiality, integrity, and availability of the data.

Microsoft has released security updates to mitigate this vulnerability, recommending that organizations apply the patches KB5062553 and KB5062552 that cover a wide range of systems, from Windows Server 2008 to Windows 11. As no real-world exploitations have been reported, there is a critical window for organizations to remedy the situation before mass exploitation attempts occur.

Customers should be aware that this vulnerability represents an inversion of the traditional security model, where they normally trust their servers. Users and administrators are urged to update their systems and software to protect against this emerging threat.

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