CVE-2026-45657
Undergoing Analysis Undergoing Analysis - In Progress
Use After Free in Windows Kernel

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Microsoft Corporation

Description
Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.
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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-2026-45657
EUVD
EUVD-2026-35697
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-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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 flaw in the Windows Kernel. It allows an unauthorized attacker to execute code remotely over a network.

Impact Analysis

The vulnerability can lead to remote code execution, which means an attacker can run arbitrary code on your system without permission. This can result in full compromise of confidentiality, integrity, and availability of the affected system.

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