CVE-2026-85921 - Vulnerability Details - OpenCVE

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

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00261.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Microsoft Subscribe	Windows 11 26h1 Subscribe

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OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85921

History

Mon, 14 Sep 2026 21:00:00 +0000

Type	Values Removed	Values Added
Description		Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
Title		Windows Secure Kernel Mode Elevation of Privilege Vulnerability
First Time appeared		Microsoft Microsoft windows 11 26h1
Weaknesses		CWE-415
CPEs		cpe:2.3:o:microsoft:windows_11_26H1:::::::x64:*
Vendors & Products		Microsoft Microsoft windows 11 26h1
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85921
Metrics		cvssV3_1 `{'score': 8.2, 'vector': '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'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-09-14T17:19:07.991Z

Updated: 2026-09-16T21:54:18.224Z

Reserved: 2026-09-04T18:24:41.250Z

Link: CVE-2026-85921

Vulnrichment

Updated: 2026-09-14T19:15:02.675Z

NVD

Status : Awaiting Analysis

Published: 2026-09-14T18:20:20.047

Modified: 2026-09-16T19:30:49.967

Link: CVE-2026-85921

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-09-15T08:00:16Z

Weaknesses

CWE-415

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