CVE-2026-96913

Undergoing Analysis Undergoing Analysis - In Progress

Heap-based Buffer Overflow in Windows Kernel

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-96913

EUVD

EUVD-2026-100243

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	10 Version 1809 10.0.17763.0
Microsoft	Windows	10 Version 21H2 10.0.19044.0
Microsoft	Windows	10 Version 22H2 10.0.19045.0
Microsoft	Windows	11 version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 24H2 10.0.26100.0
Microsoft	Windows	11 Version 25H2 10.0.26200.0
Microsoft	Windows	11 version 26H1 10.0.28000.0
Microsoft	Windows	11 Version 26H2 10.0.26300.0
Microsoft	Windows	Server 2019 10.0.17763.0
Microsoft	Windows	Server 2019 (Server Core installation) 10.0.17763.0
Microsoft	Windows	Server 2022 10.0.20348.0
Microsoft	Windows	Server 2025 10.0.26100.0
Microsoft	Windows	Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE

KEV

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().

Attack-Flow Graph

Executive Summary

This is a heap-based buffer overflow vulnerability in the Windows Kernel. It allows an authorized attacker with local access to elevate their privileges on the system. This occurs due to improper memory handling in the kernel, enabling an attacker to execute arbitrary code with higher system permissions.

Impact Analysis

If exploited, this vulnerability could allow an attacker to gain elevated privileges on your system. This means they could bypass security restrictions, install malicious software, access sensitive data, or take control of your device. It requires local access but could lead to significant system compromise.

Compliance Impact

This vulnerability allows local privilege escalation via a heap-based buffer overflow in the Windows Kernel. Such attacks could enable unauthorized access to sensitive data or system functions, potentially violating data protection requirements under GDPR and HIPAA by compromising confidentiality or integrity of protected information.

Mitigation Strategies

Apply the latest Windows security updates from Microsoft Update immediately to patch the heap-based buffer overflow in the Windows Kernel. Monitor Microsoft's security advisories for additional guidance.

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