CVE-2026-96229
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Permissive Input List in .NET Information Disclosure

Vulnerability report for CVE-2026-96229, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Permissive list of allowed inputs in .NET allows an unauthorized attacker to disclose information over a network.

CVSS Scores

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-19
AI Q&A
2026-10-14
EPSS Evaluated
2026-10-18
NVD
EUVD

Affected Vendors & Products

Showing 6 associated CPEs
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 Visual Studio 2022 version 17.14 17.14.0
Microsoft Microsoft Visual Studio 2026 version 18.10 18.10.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-183 The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are explicitly allowed by policy because the inputs are assumed to be safe, but the list is too permissive - that is, it allows an input that is unsafe, leading to resultant weaknesses.

Attack-Flow Graph

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Executive Summary

This vulnerability in .NET involves a permissive list of allowed inputs that could let an unauthorized attacker access sensitive information over a network without needing special permissions.

Impact Analysis

An attacker could exploit this to steal confidential data, such as user details or system information, potentially leading to further attacks or privacy breaches.

Compliance Impact

This vulnerability could lead to unauthorized data disclosure, violating GDPR and HIPAA requirements for protecting personal and health information, resulting in legal and financial penalties.

Mitigation Strategies

Apply the latest security updates from Microsoft for .NET and Visual Studio as soon as they become available to patch the permissive input list vulnerability.

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