Description

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

Classification

CVE ID: CVE-2025-26635

CVSS Base Severity: MEDIUM

CVSS Base Score: 6.5

CVSS Vector: 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

Affected Products

Vendor: Microsoft, Microsoft, Microsoft, Microsoft, Microsoft, Microsoft, Microsoft, Microsoft, Microsoft, Microsoft

Product: Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows 10 Version 21H2, Windows 11 version 22H2, Windows 10 Version 22H2, Windows 11 version 22H3, Windows 11 Version 23H2, Windows Server 2022, 23H2 Edition (Server Core installation)

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.07% (probability of being exploited)

EPSS Percentile: 20.82% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-26635
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26635

Timeline