CVE-2026-96224

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Out-of-Bounds Write in .NET Framework

Publication date: 2026-10-13

Last updated on: 2026-10-14

Assigner: Microsoft Corporation

Description

Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-14

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-96224

EUVD

EUVD-2026-99752

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	.NET	10.0 10.0.0
Microsoft	.NET	11.0 11.0.0
Microsoft	.NET	8.0 8.0.0
Microsoft	.NET	9.0 9.0.0
Microsoft	Microsoft	.NET Framework 3.5 3.5.0
Microsoft	Microsoft	.NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 3.0.0.0
Microsoft	Microsoft	.NET Framework 3.5 AND 4.7.2 4.7.0
Microsoft	Microsoft	.NET Framework 3.5 AND 4.8 4.8.0
Microsoft	Microsoft	.NET Framework 3.5 AND 4.8.1 4.8.1
Microsoft	Microsoft	.NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7.0
Microsoft	Microsoft	.NET Framework 4.8 4.8.0
Microsoft	Microsoft	.NET Framework 4.8.1 4.8.0.0
Microsoft	Microsoft	Visual Studio 2022 version 17.14 17.14.0
Microsoft	Microsoft	Visual Studio 2026 version 18.10 18.10.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds write vulnerability in .NET where an attacker can write data outside the intended memory buffer. This flaw allows unauthorized remote code execution by sending specially crafted input over a network.

Impact Analysis

An attacker could exploit this to run malicious code on your system remotely. This may lead to data theft, system compromise, or unauthorized access to sensitive information if your system uses affected .NET versions.

Compliance Impact

This vulnerability allows unauthorized remote code execution, which could lead to unauthorized data access, modification, or exfiltration. Such breaches may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information, depending on the affected system and data involved.

Mitigation Strategies

Apply the latest security updates from Microsoft for .NET Framework, .NET Core, and Visual Studio as soon as possible to patch the out-of-bounds write vulnerability.

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