Apr 2026: .NET and Visual Studio Denial of Service Vulnerability
CVE-2026-32203 Published on April 14, 2026

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

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-32203 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Types

What is a Stack Overflow Vulnerability?

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).

CVE-2026-32203 has been classified to as a Stack Overflow vulnerability or weakness.

Improper Input Validation

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.

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2026-32203 has been classified to as a Memory Corruption vulnerability or weakness.


Products Associated with CVE-2026-32203

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2026-32203 are published in these products:

Microsoft Visual Studio 2022
 
Microsoft Net
 
Canonical Ubuntu Linux
 
Microsoft Visual Studio 2026
 
Red Hat Enterprise Linux Eus
 
Red Hat Enterprise Linux (RHEL)
 
Red Hat Rhel Eus
 
Red Hat Hummingbird
 

Affected Versions

Microsoft .NET 10.0: Microsoft .NET 8.0: Microsoft .NET 9.0: Microsoft Visual Studio 2022 version 17.12: Microsoft Visual Studio 2022 version 17.14: Microsoft Visual Studio 2026 version 18.4: Red Hat Enterprise Linux AppStream EUS (v. 10.0): Red Hat Enterprise Linux AppStream (v. 10): Red Hat Enterprise Linux AppStream (v. 8): Red Hat Enterprise Linux AppStream EUS (v.9.4): Red Hat Enterprise Linux AppStream EUS (v.9.6): Red Hat Enterprise Linux AppStream (v. 9): Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0): Red Hat Enterprise Linux CodeReady Linux Builder (v. 10): Red Hat Enterprise Linux CRB (v. 8): Red Hat CodeReady Linux Builder EUS (v.9.4): Red Hat CodeReady Linux Builder EUS (v.9.6): Red Hat Enterprise Linux CodeReady Linux Builder (v. 9): Red Hat Hardened Images:

Exploit Probability

EPSS
0.79%
Percentile
51.37%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.