CVE-2025-26635

Windows Hello Security Feature Bypass Vulnerability

State: Published
Severity: 6.5 Medium
Published: Apr 8, 2025
Updated: Aug 10, 2026
Reserved: Feb 12, 2025

Description

Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-1390 Weak Authentication

Affected Products

Product	Versions
Windows 10 Version 1809Microsoft	10.0.17763.0 to before 10.0.17763.7136Affected
Windows 10 Version 21H2Microsoft	10.0.19044.0 to before 10.0.19044.5737Affected
Windows 10 Version 22H2Microsoft	10.0.19045.0 to before 10.0.19045.5737Affected
Windows 11 version 22H2Microsoft	10.0.22621.0 to before 10.0.22621.5189Affected
Windows 11 version 22H3Microsoft	10.0.22631.0 to before 10.0.22631.5189Affected
Windows 11 Version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.5189Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.7136Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.7136Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.3453Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.1551Affected

References

Windows Hello Security Feature Bypass Vulnerabilityvendor-advisorypatch

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.