CVE-2026-69348 - Vulnerability Details - OpenCVE

Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

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.

Key SSVC decision points have not yet been added.

Vendors	Products
Microsoft Subscribe	Windows 11 24h2 Subscribe Windows 11 25h2 Subscribe Windows 11 26h1 Subscribe Windows Server 2025 Subscribe

No data.

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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-2026-69348

History

Tue, 08 Sep 2026 17:30:00 +0000

Type	Values Removed	Values Added
Description		Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.
Title		Windows Win32k Elevation of Privilege Vulnerability
First Time appeared		Microsoft Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows 11 26h1 Microsoft windows Server 2025
Weaknesses		CWE-122
CPEs		cpe:2.3:o:microsoft:windows_11_24H2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_25H2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_26H1:::::::x64:* cpe:2.3:o:microsoft:windows_server_2025::::::::
Vendors & Products		Microsoft Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows 11 26h1 Microsoft windows Server 2025
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69348
Metrics		cvssV3_1 `{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/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: 2026-09-08T17:15:16.769Z

Updated: 2026-09-08T18:35:29.493Z

Reserved: 2026-08-03T20:52:08.512Z

Link: CVE-2026-69348

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-08T18:18:53.823

Modified: 2026-09-08T18:18:53.823

Link: CVE-2026-69348

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-122

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