CVE-2026-32203

Modified Modified - Updated After Analysis

Stack-Based Buffer Overflow in .NET, Visual Studio Causes DoS

Publication date: 2026-04-14

Last updated on: 2026-06-30

Assigner: Microsoft Corporation

Description

Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-04-14

Last Modified

2026-06-30

Generated

2026-07-06

AI Q&A

2026-04-14

EPSS Evaluated

2026-07-05

NVD

CVE-2026-32203

EUVD

EUVD-2026-22591

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	.net	From 10.0.0 (inc) to 10.0.6 (exc)
microsoft	.net	From 8.0.0 (inc) to 8.0.26 (exc)
microsoft	.net	From 9.0.0 (inc) to 9.0.15 (exc)
microsoft	visual_studio_2022	From 17.12.0 (inc) to 17.12.19 (exc)
microsoft	visual_studio_2022	From 17.14.0 (inc) to 17.14.30 (exc)
microsoft	visual_studio_2026	From 18.4.0 (inc) to 18.4.4 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
CWE-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is a stack-based buffer overflow found in .NET and Visual Studio. It allows an unauthorized attacker to cause a denial of service over a network.

Mitigation Strategies

To mitigate this vulnerability, apply the security updates provided by Microsoft for .NET and Visual Studio as soon as possible to prevent unauthorized denial of service attacks.

Compliance Impact

The vulnerability is a stack-based buffer overflow in .NET and Visual Studio that allows an unauthorized attacker to cause a denial of service over a network.

This vulnerability impacts availability but does not affect confidentiality or integrity of data.

Since the vulnerability does not lead to data breach or unauthorized data access, its direct impact on compliance with standards like GDPR or HIPAA, which focus heavily on data protection and privacy, is limited.

However, denial of service incidents can affect system availability requirements under these regulations, so organizations should consider this vulnerability in their risk assessments and mitigation strategies to maintain compliance.

Impact Analysis

The vulnerability can impact you by enabling an attacker to deny service remotely, potentially causing your applications or services running on .NET or Visual Studio to become unavailable.

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