# CVE-2025-26635

## Summary

- **CVE ID:** CVE-2025-26635
- **Severity:** MEDIUM
- **CVSS Score:** 6.5 (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)
- **CWE:** CWE-1390
- **Published:** Apr 8, 2025
- **Last Modified:** Aug 10, 2026

## Description

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

## Affected Products

- Microsoft — Windows 10 Version 1809 (10.0.17763.0)
- Microsoft — Windows 10 Version 21H2 (10.0.19044.0)
- Microsoft — Windows 10 Version 22H2 (10.0.19045.0)
- Microsoft — Windows 11 version 22H2 (10.0.22621.0)
- Microsoft — Windows 11 version 22H3 (10.0.22631.0)
- Microsoft — Windows 11 Version 23H2 (10.0.22631.0)
- Microsoft — Windows Server 2019 (10.0.17763.0)
- Microsoft — Windows Server 2019 (Server Core installation) (10.0.17763.0)
- Microsoft — Windows Server 2022 (10.0.20348.0)
- Microsoft — Windows Server 2022, 23H2 Edition (Server Core installation) (10.0.25398.0)

## References

- [CNA](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26635)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 1.47%
- **EPSS Percentile:** 72.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._