CVE-2026-20922
Unknown Unknown - Not Provided
Heap-Based Buffer Overflow in Windows NTFS Enables Local Code Execution

Publication date: 2026-01-13

Last updated on: 2026-01-13

Assigner: Microsoft Corporation

Description
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.
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Meta Information
Published
2026-01-13
Last Modified
2026-01-13
Generated
2026-06-16
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-20922
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows_ntfs *
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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().
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Executive Summary

This vulnerability is a heap-based buffer overflow in Windows NTFS that allows an authorized attacker to execute code locally on the affected system. [1]

Impact Analysis

An attacker who is authorized on the system can exploit this vulnerability to execute arbitrary code locally, potentially leading to full system compromise including confidentiality, integrity, and availability impacts. [1]

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