This vulnerability (CVE-2026-27928) involves improper input validation in the Windows Hello component of Microsoft Windows Server 2016 (version 10.0.14393.0). It enables an attacker without privileges or user interaction to bypass a security feature remotely over a network. The CVSS v3.1 base score is 8.7, indicating high severity with network attack vector, high complexity, no privileges required, no user interaction, and impacts confidentiality and integrity with a complete scope change. Microsoft has published an official fix for this vulnerability.

Successful exploitation allows an unauthorized attacker to bypass security features in Windows Hello remotely, potentially leading to unauthorized access and compromise of confidentiality and integrity of the affected system. There is no indication of impact on availability. No known exploits are reported in the wild at this time.

An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27928 to remediate this vulnerability.