CVE-2025-26635

Published: Apr 8, 2025Modified: Jun 17, 2026

6.5

Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Exploitability: 1.2 / Impact: 5.2

Source: secure@microsoft.com (Secondary)

Description

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

Affected (11)

Products: Microsoft: Windows 10 1809, Windows 10 21h2, Windows 10 22h2, Windows 11 22h2, Windows 11 23h2, Windows Server 2019, Windows Server 2022, Windows Server 2022 23h2

8 products

Windows 10 1809

Windows 10 21h2

Windows 10 22h2

Windows 11 22h2

Windows 11 23h2

Windows Server 2019

Windows Server 2022

Windows Server 2022 23h2

Configuration A

11 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 10 1809	version < 10.0.17763.7136
Microsoft Windows 10 1809	version < 10.0.17763.7136
Microsoft Windows 10 21h2	version < 10.0.19044.5737
Microsoft Windows 10 22h2	version < 10.0.19045.5737
Microsoft Windows 11 22h2	version < 10.0.22621.5189
Microsoft Windows 11 22h2	version < 10.0.22621.5189
Microsoft Windows 11 23h2	version < 10.0.22631.5189
Microsoft Windows 11 23h2	version < 10.0.22631.5189
Microsoft Windows Server 2019	version < 10.0.17763.7136
Microsoft Windows Server 2022	version < 10.0.20348.3453
Microsoft Windows Server 2022 23h2	version < 10.0.25398.1551

Related CWEs

Weak Authentication

The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26635

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.