CVE-2026-70243 - Vulnerability Details - OpenCVE

Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

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.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Microsoft Subscribe	Windows 11 23h2 Subscribe Windows Server 2025 Subscribe

No data.

No data.

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-2026-70243

History

Wed, 14 Oct 2026 00:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 13 Oct 2026 19:15:00 +0000

Type	Values Removed	Values Added
Description		Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Title		Windows Kernel Elevation of Privilege Vulnerability
First Time appeared		Microsoft Microsoft windows 11 23h2 Microsoft windows Server 2025
Weaknesses		CWE-416
CPEs		cpe:2.3:o:microsoft:windows_11_23H2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_23H2:::::::x64:* cpe:2.3:o:microsoft:windows_server_2025::::::::
Vendors & Products		Microsoft Microsoft windows 11 23h2 Microsoft windows Server 2025
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70243
Metrics		cvssV3_1 `{'score': 7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-10-13T18:59:56.591Z

Updated: 2026-10-13T22:16:23.186Z

Reserved: 2026-08-03T23:54:57.811Z

Link: CVE-2026-70243

Vulnrichment

Updated: 2026-10-13T20:50:02.011Z

NVD

Status : Awaiting Analysis

Published: 2026-10-13T19:19:41.120

Modified: 2026-10-13T21:18:11.463

Link: CVE-2026-70243

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-416

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