CVE-2026-27928

CWE-20 — Improper Input Validation2 documents2 sources
Severity
8.7HIGH
EPSS
No EPSS data
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
7
Microsoft Windows Server 2016Microsoft Windows Server 2016 (server Core Installation)Microsoft Windows Server 2019+4 more
Timeline
PublishedApr 14

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:NExploitability: 2.2 | Impact: 5.8

Affected Packages7 packages

▶CVEListV5microsoft/windows_server_201610.0.14393.0 — 10.0.14393.9060
▶CVEListV5microsoft/windows_server_201910.0.17763.0 — 10.0.17763.8644
▶CVEListV5microsoft/windows_server_202210.0.20348.0 — 10.0.20348.5020
▶CVEListV5microsoft/windows_server_202510.0.26100.0 — 10.0.26100.32690
▶CVEListV5microsoft/windows_server_2016_(server_core_installation)10.0.14393.0 — 10.0.14393.9060

🔴Vulnerability Details

1
CVEList
Windows Hello Security Feature Bypass Vulnerability↗2026-04-14
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CVE-2026-27928 (HIGH CVSS 8.7) | Improper input validation in Window | cvebase.io