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Δ / VULNERABILITY RECORD

CVE-2026-26171.

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 22, 2026

Disclosure summary

Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.

Source-reported weakness categories

CWE-400, CWE-611

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 22, 2026

.NET 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 guidePowerShell 7.5 (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 10.0 installed on Mac OS (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 Windows (MSRC status code 3)
Microsoft update guide.NET 9.0 installed on Mac OS (MSRC status code 3)
Microsoft update guidePowerShell 7.6 (MSRC status code 3)

Vendor remediation references

Original records & references

PUBLISHED 2026-04-14T03:00:00-04:00
MODIFIED 2026-04-22T03:00:00-04:00
INGESTED 2026-10-08T12:45:04-04:00