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MEDIUM · 6.5

CVE-2025-26635

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

Vulnerability Description

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

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
MicrosoftWindows 10 1809< 10.0.17763.7136
MicrosoftWindows 10 21H2< 10.0.19044.5737
MicrosoftWindows 10 22H2< 10.0.19045.5737
MicrosoftWindows 11 22H2< 10.0.22621.5189
MicrosoftWindows 11 23H2< 10.0.22631.5189
MicrosoftWindows Server 2019< 10.0.17763.7136
MicrosoftWindows Server 2022< 10.0.20348.3453
MicrosoftWindows Server 2022 23H2< 10.0.25398.1551

Related Weaknesses (CWE)

CWE-1390

References

FAQ

What is CVE-2025-26635?

CVE-2025-26635 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network.

How severe is CVE-2025-26635?

CVE-2025-26635 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-26635?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10 1809, Microsoft Windows 10 21H2, Microsoft Windows 10 22H2, Microsoft Windows 11 22H2, Microsoft Windows 11 23H2.