What is CVE-2026-32203?

CVE-2026-32203 is a security advisory published by Microsoft with High severity. EchelonGraph links Microsoft's advisory rather than copying its page; it is at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32203.

Which CVE IDs does CVE-2026-32203 cover?

CVE-2026-32203 covers the following CVE IDs: CVE-2026-32203. Each CVE has its own detail page on EchelonGraph Pulse with its EchelonGraph score.

What is the CVSS v3 score of CVE-2026-32203?

CVE-2026-32203 has a CVSS v3 base score of 7.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-32203?

CVE-2026-32203 affects 12 products, including: .NET 10.0 installed on Linux; .NET 10.0 installed on Mac OS; .NET 10.0 installed on Windows; .NET 8.0 installed on Linux; .NET 8.0 installed on Mac OS; and others — see the full list on the advisory page.

How do I remediate CVE-2026-32203?

Microsoft lists 6 updates for CVE-2026-32203. Each is listed on this page with its fixed build; Microsoft's advisory is at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32203.

CVE-2026-32203HighMicrosoft CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Microsoft security update for CVE-2026-32203

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-32203 →

📋 Microsoft's advisory

EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32203. This page also shows what EchelonGraph holds for CVE-2026-32203, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.

🎯 Affected products12

.NET 10.0 installed on Linux
.NET 10.0 installed on Mac OS
.NET 10.0 installed on Windows
.NET 8.0 installed on Linux
.NET 8.0 installed on Mac OS
.NET 8.0 installed on Windows
.NET 9.0 installed on Linux
.NET 9.0 installed on Mac OS
.NET 9.0 installed on Windows
Microsoft Visual Studio 2022 version 17.12
Microsoft Visual Studio 2022 version 17.14
Microsoft Visual Studio 2026 version 18.4

✅ Updates Microsoft lists: 6 updates

6 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.

KB article	Update	Fixed build
—	Security Update	18.4.4
—	Security Update	17.12.19
—	Security Update	17.14.30
—	Security Update	10.0.6
—	Security Update	8.0.26
—	Security Update	9.0.15

🧭 EchelonGraph on CVE-2026-32203

EchelonGraph score: 7.5 HIGH
CISA KEV: Not listed
Fix status: A fix is available — apply it.

Description from the CVE record (CVE.org), as published by its numbering authority

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

Published by Microsoft Corporation, the CVE Numbering Authority that assigned CVE-2026-32203, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).

🔗 CVE IDs covered (1)

📋 Microsoft's advisory

🎯 Affected products12

✅ Updates Microsoft lists: 6 updates

🧭 EchelonGraph on CVE-2026-32203

🔗 References (12)