# CVE-2026-85921

## Summary

- **CVE ID:** CVE-2026-85921
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)
- **CWE:** CWE-415
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 16, 2026

## Description

Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.

## Affected Products

- Microsoft — Windows 11 version 26H1 (10.0.28000.0)

## References

- [CNA](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85921)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.26%
- **EPSS Percentile:** 18.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._