Security Feature Bypass in Windows Hello by Microsoft
CVE-2026-27928

8.7HIGH

Key Information:

Vendor

Microsoft
Status
Windows Server 2016
Windows Server 2016 (server Core Installation)
Windows Server 2019
Windows Server 2019 (server Core Installation)
Vendor
CVE Published:
14 April 2026

What is CVE-2026-27928?

A security feature bypass vulnerability exists in Windows Hello due to improper input validation. This flaw permits unauthorized attackers to exploit the system over a network, effectively circumventing intended security measures. Users are encouraged to apply the relevant patches to mitigate the risk associated with this vulnerability.

Affected Version(s)

Windows Server 2016 (Server Core installation) x64-based Systems 10.0.14393.0 < 10.0.14393.9060

Windows Server 2016 x64-based Systems 10.0.14393.0 < 10.0.14393.9060

Windows Server 2019 (Server Core installation) x64-based Systems 10.0.17763.0 < 10.0.17763.8644

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.