CVE-2026-27928

HIGH

Windows Hello Security Feature Bypass Vulnerability

Title source: cna
STIX 2.1

Description

Improper input validation in Windows Hello allows an unauthorized attacker to bypass a security feature over a network.

References (1)

Scores

CVSS v3 8.7
EPSS 0.0015
EPSS Percentile 35.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-20
Status published
Products (13)
Microsoft/Windows Server 2016 10.0.14393.0 - 10.0.14393.9060
Microsoft/Windows Server 2016 (Server Core installation) 10.0.14393.0 - 10.0.14393.9060
Microsoft/Windows Server 2019 10.0.17763.0 - 10.0.17763.8644
Microsoft/Windows Server 2019 (Server Core installation) 10.0.17763.0 - 10.0.17763.8644
Microsoft/Windows Server 2022 10.0.20348.0 - 10.0.20348.5020
Microsoft/Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 - 10.0.25398.2274
Microsoft/Windows Server 2025 10.0.26100.0 - 10.0.26100.32690
Microsoft/Windows Server 2025 (Server Core installation) 10.0.26100.0 - 10.0.26100.32690
microsoft/windows_server_2016 < 10.0.14393.9060
microsoft/windows_server_2019 < 10.0.17763.8644
... and 3 more
Published Apr 14, 2026
Tracked Since Apr 14, 2026