CVE-2026-70354
Received Received - Intake

Out-of-Bounds Write in .NET Framework

Vulnerability report for CVE-2026-70354, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-08-11

Last updated on: 2026-08-11

Assigner: Microsoft Corporation

Description

Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.

CVSS Scores

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Meta Information

Published
2026-08-11
Last Modified
2026-08-11
Generated
2026-08-11
AI Q&A
2026-08-11
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft .net *

Helpful Resources

Exploitability

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

Attack-Flow Graph

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Executive Summary

This vulnerability is an out-of-bounds write issue in .NET. It allows an unauthorized attacker to execute code locally on a system. This occurs when software writes data outside the intended memory buffer, potentially corrupting data or enabling malicious code execution.

Impact Analysis

An attacker could exploit this to run arbitrary code on your system. This may lead to unauthorized access, data theft, or system compromise. Local execution means the attacker must already have some access to the system, but the impact could be severe if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft for .NET as soon as possible to patch the out-of-bounds write vulnerability. Monitor Microsoft's security advisories for patches and follow their guidance for mitigation.

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