Critical severityNVD Advisory· Published Oct 14, 2025· Updated Feb 22, 2026
ASP.NET Security Feature Bypass Vulnerability
CVE-2025-55315
Description
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Microsoft.AspNetCore.Server.Kestrel.CoreNuGet | < 2.3.6 | 2.3.6 |
Microsoft.AspNetCore.App.Runtime.linux-armNuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.linux-arm64NuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.linux-musl-armNuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64NuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.linux-musl-x64NuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.linux-x64NuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.osx-arm64NuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.osx-x64NuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.win-armNuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.win-arm64NuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.win-x64NuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.win-x86NuGet | >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107 | 10.0.0-rc.2.25502.107 |
Microsoft.AspNetCore.App.Runtime.linux-armNuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.linux-arm64NuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.linux-musl-armNuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64NuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.linux-musl-x64NuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.linux-x64NuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.osx-arm64NuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.osx-x64NuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.win-armNuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.win-arm64NuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.win-x64NuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.win-x86NuGet | >= 9.0.0, < 9.0.10 | 9.0.10 |
Microsoft.AspNetCore.App.Runtime.linux-armNuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Microsoft.AspNetCore.App.Runtime.linux-arm64NuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Microsoft.AspNetCore.App.Runtime.linux-musl-armNuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64NuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Microsoft.AspNetCore.App.Runtime.linux-musl-x64NuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Microsoft.AspNetCore.App.Runtime.linux-x64NuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Microsoft.AspNetCore.App.Runtime.osx-arm64NuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Microsoft.AspNetCore.App.Runtime.osx-x64NuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Microsoft.AspNetCore.App.Runtime.win-armNuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Microsoft.AspNetCore.App.Runtime.win-arm64NuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Microsoft.AspNetCore.App.Runtime.win-x64NuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Microsoft.AspNetCore.App.Runtime.win-x86NuGet | >= 8.0.0, < 8.0.21 | 8.0.21 |
Affected products
95- osv-coords89 versionspkg:apk/chainguard/aspnet-8-runtimepkg:apk/chainguard/aspnet-8-runtime-defaultpkg:apk/chainguard/aspnet-8-targeting-packpkg:apk/chainguard/aspnet-9-runtimepkg:apk/chainguard/aspnet-9-runtime-defaultpkg:apk/chainguard/aspnet-9-targeting-packpkg:apk/chainguard/azure-functions-extension-bundles-4pkg:apk/chainguard/dotnet-8pkg:apk/chainguard/dotnet-8-runtimepkg:apk/chainguard/dotnet-8-runtime-defaultpkg:apk/chainguard/dotnet-8-sdkpkg:apk/chainguard/dotnet-8-sdk-defaultpkg:apk/chainguard/dotnet-8-targeting-packpkg:apk/chainguard/dotnet-9pkg:apk/chainguard/dotnet-9-aotpkg:apk/chainguard/dotnet-9-runtimepkg:apk/chainguard/dotnet-9-runtime-defaultpkg:apk/chainguard/dotnet-9-sdkpkg:apk/chainguard/dotnet-9-sdk-defaultpkg:apk/chainguard/dotnet-9-targeting-packpkg:apk/chainguard/dotnet-bootstrap-8pkg:apk/chainguard/dotnet-bootstrap-9pkg:apk/chainguard/netstandard-8-targeting-packpkg:apk/chainguard/netstandard-9-targeting-packpkg:apk/wolfi/aspnet-8-runtimepkg:apk/wolfi/aspnet-8-runtime-defaultpkg:apk/wolfi/aspnet-8-targeting-packpkg:apk/wolfi/aspnet-9-runtimepkg:apk/wolfi/aspnet-9-runtime-defaultpkg:apk/wolfi/aspnet-9-targeting-packpkg:apk/wolfi/dotnet-8pkg:apk/wolfi/dotnet-8-runtimepkg:apk/wolfi/dotnet-8-runtime-defaultpkg:apk/wolfi/dotnet-8-sdkpkg:apk/wolfi/dotnet-8-sdk-defaultpkg:apk/wolfi/dotnet-8-targeting-packpkg:apk/wolfi/dotnet-9pkg:apk/wolfi/dotnet-9-aotpkg:apk/wolfi/dotnet-9-runtimepkg:apk/wolfi/dotnet-9-runtime-defaultpkg:apk/wolfi/dotnet-9-sdkpkg:apk/wolfi/dotnet-9-sdk-defaultpkg:apk/wolfi/dotnet-9-targeting-packpkg:apk/wolfi/dotnet-bootstrap-8pkg:apk/wolfi/dotnet-bootstrap-9pkg:apk/wolfi/netstandard-8-targeting-packpkg:apk/wolfi/netstandard-9-targeting-packpkg:bitnami/aspnet-corepkg:nuget/microsoft.aspnetcore.app.runtime.linux-armpkg:nuget/microsoft.aspnetcore.app.runtime.linux-arm64pkg:nuget/microsoft.aspnetcore.app.runtime.linux-musl-armpkg:nuget/microsoft.aspnetcore.app.runtime.linux-musl-arm64pkg:nuget/microsoft.aspnetcore.app.runtime.linux-musl-x64pkg:nuget/microsoft.aspnetcore.app.runtime.linux-x64pkg:nuget/microsoft.aspnetcore.app.runtime.osx-arm64pkg:nuget/microsoft.aspnetcore.app.runtime.osx-x64pkg:nuget/microsoft.aspnetcore.app.runtime.win-armpkg:nuget/microsoft.aspnetcore.app.runtime.win-arm64pkg:nuget/microsoft.aspnetcore.app.runtime.win-x64pkg:nuget/microsoft.aspnetcore.app.runtime.win-x86pkg:nuget/microsoft.aspnetcore.server.kestrel.corepkg:rpm/almalinux/aspnetcore-runtime-8.0pkg:rpm/almalinux/aspnetcore-runtime-9.0pkg:rpm/almalinux/aspnetcore-runtime-dbg-8.0pkg:rpm/almalinux/aspnetcore-runtime-dbg-9.0pkg:rpm/almalinux/aspnetcore-targeting-pack-8.0pkg:rpm/almalinux/aspnetcore-targeting-pack-9.0pkg:rpm/almalinux/dotnetpkg:rpm/almalinux/dotnet-apphost-pack-8.0pkg:rpm/almalinux/dotnet-apphost-pack-9.0pkg:rpm/almalinux/dotnet-hostpkg:rpm/almalinux/dotnet-hostfxr-8.0pkg:rpm/almalinux/dotnet-hostfxr-9.0pkg:rpm/almalinux/dotnet-runtime-8.0pkg:rpm/almalinux/dotnet-runtime-9.0pkg:rpm/almalinux/dotnet-runtime-dbg-8.0pkg:rpm/almalinux/dotnet-runtime-dbg-9.0pkg:rpm/almalinux/dotnet-sdk-8.0pkg:rpm/almalinux/dotnet-sdk-8.0-source-built-artifactspkg:rpm/almalinux/dotnet-sdk-9.0pkg:rpm/almalinux/dotnet-sdk-9.0-source-built-artifactspkg:rpm/almalinux/dotnet-sdk-aot-9.0pkg:rpm/almalinux/dotnet-sdk-dbg-8.0pkg:rpm/almalinux/dotnet-sdk-dbg-9.0pkg:rpm/almalinux/dotnet-targeting-pack-8.0pkg:rpm/almalinux/dotnet-targeting-pack-9.0pkg:rpm/almalinux/dotnet-templates-8.0pkg:rpm/almalinux/dotnet-templates-9.0pkg:rpm/almalinux/netstandard-targeting-pack-2.1
< 8.0.121-r0+ 88 more
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 4.28.0-r1
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 8.0.122-r0
- (no CPE)range: < 9.0.112-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: < 8.0.122-r0
- (no CPE)range: < 9.0.112-r0
- (no CPE)range: < 8.0.121-r0
- (no CPE)range: < 9.0.111-r0
- (no CPE)range: >= 2.3.0, < 2.3.6
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107
- (no CPE)range: < 2.3.6
- (no CPE)range: < 8.0.21-1.el8_10
- (no CPE)range: < 9.0.10-1.el8_10
- (no CPE)range: < 8.0.21-1.el8_10
- (no CPE)range: < 9.0.10-1.el8_10
- (no CPE)range: < 8.0.21-1.el8_10
- (no CPE)range: < 9.0.10-1.el8_10
- (no CPE)range: < 9.0.111-1.el8_10
- (no CPE)range: < 8.0.21-1.el8_10
- (no CPE)range: < 9.0.10-1.el8_10
- (no CPE)range: < 9.0.10-1.el8_10
- (no CPE)range: < 8.0.21-1.el8_10
- (no CPE)range: < 9.0.10-1.el8_10
- (no CPE)range: < 8.0.21-1.el8_10
- (no CPE)range: < 9.0.10-1.el8_10
- (no CPE)range: < 8.0.21-1.el8_10
- (no CPE)range: < 9.0.10-1.el8_10
- (no CPE)range: < 8.0.121-1.el8_10
- (no CPE)range: < 8.0.121-1.el8_10
- (no CPE)range: < 9.0.111-1.el8_10
- (no CPE)range: < 9.0.111-1.el8_10
- (no CPE)range: < 9.0.111-1.el8_10
- (no CPE)range: < 8.0.121-1.el8_10
- (no CPE)range: < 9.0.111-1.el8_10
- (no CPE)range: < 8.0.21-1.el8_10
- (no CPE)range: < 9.0.10-1.el8_10
- (no CPE)range: < 8.0.121-1.el8_10
- (no CPE)range: < 9.0.111-1.el8_10
- (no CPE)range: < 9.0.111-1.el8_10
2.3+ 2 more
- (no CPE)range: 2.3
- (no CPE)range: 8.0
- (no CPE)range: 9.0
- Microsoft/Microsoft Visual Studio 2022 version 17.10v5Range: 17.10.0
- Microsoft/Microsoft Visual Studio 2022 version 17.12v5Range: 17.12.0
- Microsoft/Microsoft Visual Studio 2022 version 17.14v5Range: 17.14.0
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-5rrx-jjjq-q2r5ghsaADVISORY
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55315ghsavendor-advisorypatchWEB
- nvd.nist.gov/vuln/detail/CVE-2025-55315ghsaADVISORY
- github.com/dotnet/announcements/issues/371ghsaWEB
- github.com/dotnet/aspnetcore/security/advisories/GHSA-5rrx-jjjq-q2r5ghsaWEB
News mentions
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