CVE-2026-27928

high Microsoft
CVSS v3 Base Score
8.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
EPSS Score
0.2%
Exploitation probability in 30 days
Top 64% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
None
Published: April 14, 2026 (29 days ago)
Last Modified: April 24, 2026
Vendor: Microsoft
Source: MITRE

Description

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

CWE

CWE-20

Affected Products

Microsoft Windows Server 2016Microsoft Windows Server 2016 (Server Core installation)Microsoft Windows Server 2019Microsoft Windows Server 2019 (Server Core installation)Microsoft Windows Server 2022Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft Windows Server 2025Microsoft Windows Server 2025 (Server Core installation)

References

🔗 msrc.microsoft.com