Use After Free in Windows VHD Miniport Driver

Publication date: 2026-09-08

Last updated on: 2026-09-09

Assigner: Microsoft Corporation

Description

Use after free in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-09

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-69611

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	virtual_hard_disk_miniport_driver	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This vulnerability is a use after free issue in the Virtual Hard Disk (VHD) Miniport Driver. It allows an authorized attacker to elevate their privileges locally by exploiting a memory management flaw.

Impact Analysis

An attacker could gain higher privileges on your system, potentially allowing them to execute malicious code, install programs, or access sensitive data. This could lead to system compromise or data breaches.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Virtual Hard Disk (VHD) Miniport Driver. Monitor Microsoft's update guide for patches and ensure all systems are updated promptly.

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