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Δ / VULNERABILITY RECORD

CVE-2026-32203.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 7.5No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Apr 20, 2026

Disclosure summary

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

Source-reported weakness categories

CWE-121, CWE-20

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2026-Apr

Open original source · Updated Apr 20, 2026

.NET and Visual Studio Denial of Service Vulnerability

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 7.5

VendorProduct / associationVersion / bounds
Microsoft update guideMicrosoft Visual Studio 2026 version 18.4 (MSRC status code 3)
Microsoft update guideMicrosoft Visual Studio 2022 version 17.12 (MSRC status code 3)
Microsoft update guideMicrosoft Visual Studio 2022 version 17.14 (MSRC status code 3)
Microsoft update guide.NET 10.0 installed on Windows (MSRC status code 3)
Microsoft update guide.NET 10.0 installed on Mac OS (MSRC status code 3)
Microsoft update guide.NET 10.0 installed on Linux (MSRC status code 3)
Microsoft update guide.NET 8.0 installed on Windows (MSRC status code 3)
Microsoft update guide.NET 8.0 installed on Linux (MSRC status code 3)
Microsoft update guide.NET 8.0 installed on Mac OS (MSRC status code 3)
Microsoft update guide.NET 9.0 installed on Linux (MSRC status code 3)
Microsoft update guide.NET 9.0 installed on Mac OS (MSRC status code 3)
Microsoft update guide.NET 9.0 installed on Windows (MSRC status code 3)

Vendor remediation references

  • Release Notes · build 18.4.4 · product IDs 21166
  • Vendor guidance · product IDs 21166
  • Release Notes · build 17.12.19 · product IDs 12459
  • Vendor guidance · product IDs 12459
  • Release Notes · build 17.14.30 · product IDs 16767
  • Vendor guidance · product IDs 16767
  • 5086095 · build 10.0.6 · product IDs 20837, 20838, 20839
  • Vendor guidance · product IDs 20837, 20838, 20839
  • 5086096 · build 8.0.26 · product IDs 12414, 12415, 12416
  • Vendor guidance · product IDs 12414, 12415, 12416
  • 5086097 · build 9.0.15 · product IDs 12432, 12433, 12434
  • Vendor guidance · product IDs 12432, 12433, 12434

Original records & references

PUBLISHED 2026-04-14T03:00:00-04:00
MODIFIED 2026-04-20T03:00:00-04:00
INGESTED 2026-10-08T12:45:05-04:00