Is Microsoft.NETCore.App.Runtime.linux-x64 affected by CVE-2026-45491?

NuGet Microsoft.NETCore.App.Runtime.linux-x64 is affected in >=8.0.0 =9.0.0 =10.0.0 <10.0.9.

Is CVE-2026-45491 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

medium

CVE-2026-45491

Q: Is CVE-2026-45491 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

NuGet · Microsoft.NETCore.App.Runtime.linux-x64 • NuGet · Microsoft.NETCore.App.Runtime.win-x64 • NuGet · Microsoft.NETCore.App.Runtime.osx-arm64

Summary

Microsoft Security Advisory CVE-2026-45491 – .NET Tampering Vulnerability

Severity: medium
EPSS: 0.4% (p32)
Also known as: GHSA-7q4v-2mr6-5gpx#Microsoft.NETCore.App.Runtime.linux-x64, GHSA-7q4v-2mr6-5gpx#Microsoft.NETCore.App.Runtime.osx-arm64, GHSA-7q4v-2mr6-5gpx#Microsoft.NETCore.App.Runtime.win-x64, BIT-dotnet-2026-45491, BIT-dotnet-sdk-2026-45491
Published: 2026-06-16

References

Related advisories

CVE-2020-1147 — high · NuGet/Microsoft.NETCore.App.Runtime.linux-x64

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.