Microsoft .NET/Visual Studio prior 8.0.26/9.0.15/10.0.6/17.12.19/17.14.30 stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Microsoft .NET and Visual Studio. Impacted is an unknown function. The manipulation results in stack-based overflow. This vulnerability is identified as CVE-2026-32203. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in Microsoft .NET and Visual Studio. Affected is an unknown code block. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as 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). This is going to have an impact on availability. CVE summarizes:

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

The weakness was released 04/14/2026 as confirmed security update guide (Website). The advisory is shared for download at msrc.microsoft.com. This vulnerability is traded as CVE-2026-32203. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/02/2026).

The vulnerability scanner Nessus provides a plugin with the ID 306470 (Linux Distros Unpatched Vulnerability : CVE-2026-32203), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.0.26, 9.0.15, 10.0.6, 17.12.19 or 17.14.30 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (306470) and CERT Bund (WID-SEC-2026-1100). Once again VulDB remains the best source for vulnerability data.

Affected

  • Microsoft .NET Framework
  • Microsoft PowerShell
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • Oracle Linux
  • Microsoft .NET
  • Microsoft Visual Studio 2017
  • Microsoft Visual Studio Code
  • Microsoft Visual Studio 2022
  • Microsoft Visual Studio 2019

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.5
Vendor Vector (Microsoft): 🔒

CNA Base Score: 7.5
CNA Vector (Microsoft): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Unproven

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 306470
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-32203

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

Upgrade: .NET/Visual Studio 8.0.26/9.0.15/10.0.6/17.12.19/17.14.30

Timelineinfo

04/14/2026 VulDB entry created
04/14/2026 +0 days Advisory disclosed
04/14/2026 +0 days Countermeasure disclosed
07/02/2026 +78 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2026-32203 (🔒)
GCVE (CVE): GCVE-0-2026-32203
GCVE (VulDB): GCVE-100-357516
CERT Bund: WID-SEC-2026-1100 - Microsoft DeveloperTools: Mehrere Schwachstellen

Entryinfo

Created: 04/14/2026 20:37
Updated: 07/02/2026 05:48
Changes: 04/14/2026 20:37 (35), 04/14/2026 20:40 (34), 04/15/2026 21:10 (2), 04/18/2026 19:51 (7), 07/02/2026 05:48 (12)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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