CVE-2026-96229

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Permissive Input List in .NET Information Disclosure

Publication date: 2026-10-13

Last updated on: 2026-10-22

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

2026-10-22

Generated

2026-11-08

AI Q&A

2026-10-14

EPSS Evaluated

2026-11-07

NVD

CVE-2026-96229

EUVD

EUVD-2026-100204

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 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-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

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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