CVE-2026-68884
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Heap-based Buffer Overflow in Windows Kernel

Publication date: 2026-09-08

Last updated on: 2026-09-09

Assigner: Microsoft Corporation

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

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Meta Information

Published
2026-09-08
Last Modified
2026-09-09
Generated
2026-09-09
AI Q&A
2026-09-09
EPSS Evaluated
N/A
NVD
CVE-2026-68884

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().

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Executive Summary

This is a heap-based buffer overflow vulnerability in the Windows Kernel. It allows an authorized attacker with local access to execute arbitrary code with elevated privileges by exploiting a flaw that overwrites memory in the heap region.

Impact Analysis

An attacker could gain higher-level permissions on your system, allowing them to install programs, view or delete data, or create new accounts with full user rights. This could lead to complete system compromise if exploited.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating confidentiality requirements in GDPR and HIPAA. Organizations may face fines or penalties if such incidents occur due to inadequate security measures.

Mitigation Strategies

Apply the latest Windows security updates from Microsoft immediately to patch the kernel vulnerability. Monitor Microsoft's security advisories for updates and disable unnecessary services or user accounts that could be exploited.

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