CVE-2026-42984
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Use After Free in Windows Kernel Allows Local Privilege Escalation

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Microsoft Corporation

Description
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
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Meta Information
Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-10
AI Q&A
2026-06-09
EPSS Evaluated
N/A
NVD
CVE-2026-42984
EUVD
EUVD-2026-35734
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows_kernel *
Helpful Resources
Exploitability
CWE
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KEV
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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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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Executive Summary

This vulnerability is a use after free issue in the Windows Kernel. It allows an authorized attacker to elevate their privileges locally on the affected system.

Impact Analysis

An attacker who exploits this vulnerability can gain higher privileges on the system than they are normally allowed. This means they could perform actions that require elevated permissions, potentially compromising system security and integrity.

Compliance Impact

This vulnerability allows an authorized attacker to elevate privileges locally by exploiting a use after free in the Windows Kernel.

Elevation of privilege vulnerabilities can potentially lead to unauthorized access to sensitive data or system resources, which may impact compliance with standards such as GDPR and HIPAA that require protection of personal and health information.

However, the provided information does not explicitly detail the direct impact on compliance with these regulations.

Mitigation Strategies

This vulnerability allows an authorized attacker to elevate privileges locally via a use after free in the Windows Kernel.

To mitigate this vulnerability, it is recommended to apply the security updates provided by Microsoft as soon as possible.

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