CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2026-114154 ASP.NET Core Denial of Service Vulnerability
High (7.5) in microsoft. EPSS 1.3% estimated probability of exploitation activity in the next 30 days. Fixed in Microsoft.AspNetCore.Server.HttpSys 2.3.14.
On this page
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Severity
- EPSS
- 1.3% estimated probability of exploitation activity in the next 30 days; 71st percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: yes · Technical impact: partial, assessed 2026-11-10. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-401 Missing Release of Memory after Effective Lifetime
- Published
- Modified
- Assigned by
- microsoft (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
- microsoft:.net 10.0 installed on windows
- microsoft:.net 8.0 installed on windows
- microsoft:.net 9.0 installed on windows
- microsoft:microsoft visual studio 2022 version 17.14
- microsoft:microsoft visual studio 2026 version 18.11
- microsoft:microsoft visual studio 2026 version 18.12
- microsoft:microsoft.aspnetcore.server.httpsys
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Microsoft .NET 10.0 installed on Windows | from 10.0.0 before 10.0.15 |
| Microsoft .NET 8.0 installed on Windows | from 8.0.0 before 8.0.34 |
| Microsoft .NET 9.0 installed on Windows | from 9.0.0 before 9.0.23 |
| Microsoft Visual Studio 2022 version 17.14 | from 17.14.0 before 17.14.45 |
| Microsoft Visual Studio 2026 version 18.11 | from 18.11.0 before 18.11.4 |
| Microsoft Visual Studio 2026 version 18.12 | from 18.12.0 before 18.12.0 |
| Microsoft.AspNetCore.Server.HttpSys | from 2.3.10 before 2.3.14 |
Fix and patched versions
Microsoft.AspNetCore.Server.HttpSys(NuGet): fixed in 2.3.14Microsoft.AspNetCore.App.Runtime.win-arm64(NuGet): fixed in 8.0.34, 9.0.23, 10.0.15Microsoft.AspNetCore.App.Runtime.win-x64(NuGet): fixed in 8.0.34, 9.0.23, 10.0.15Microsoft.AspNetCore.App.Runtime.win-x86(NuGet): fixed in 8.0.34, 9.0.23, 10.0.15- Alpine: fixed package versions per release
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.Server.HttpSys | >=2.3.10 <2.3.14 | 2.3.14 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.Server.HttpSys | >=2.3.11 <2.3.14 | 2.3.14 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.Server.HttpSys | >=2.3.12 <2.3.14 | 2.3.14 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.Server.HttpSys | >=2.3.13 <2.3.14 | 2.3.14 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.App.Runtime.win-arm64 | >=8.0.0 <8.0.34 | 8.0.34 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.App.Runtime.win-x64 | >=8.0.0 <8.0.34 | 8.0.34 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.App.Runtime.win-x86 | >=8.0.0 <8.0.34 | 8.0.34 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.App.Runtime.win-arm64 | >=9.0.0 <9.0.23 | 9.0.23 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.App.Runtime.win-x64 | >=9.0.0 <9.0.23 | 9.0.23 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.App.Runtime.win-x86 | >=9.0.0 <9.0.23 | 9.0.23 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.App.Runtime.win-arm64 | >=10.0.0 <10.0.15 | 10.0.15 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.App.Runtime.win-x64 | >=10.0.0 <10.0.15 | 10.0.15 |
| GHSA-3893-7fxc-qvff | NuGet | Microsoft.AspNetCore.App.Runtime.win-x86 | >=10.0.0 <10.0.15 | 10.0.15 |
Linux distributions
| Distribution | Release | Package | Fixed in | Advisory |
|---|---|---|---|---|
| Ubuntu | 22.04:LTS | dotnet7 | no fix listed | UBUNTU-CVE-2026-114154 |
| Alpine | v3.22, v3.23, v3.24 | dotnet8-runtime | 8.0.34-r0 | ALPINE-CVE-2026-114154 |
| Alpine | v3.22, v3.23, v3.24 | dotnet9-runtime | 9.0.23-r0 | ALPINE-CVE-2026-114154 |
| Alpine | v3.24 | dotnet10-runtime | 10.0.15-r0 | ALPINE-CVE-2026-114154 |
From the distributions' data via OSV.dev: Ubuntu Security Notices © Canonical Ltd., CC BY-SA 4.0; the Alpine secdb, CC BY-SA 4.0. Modified: reformatted and linked to CVE records. Credits. On the distributions' own pages: Ubuntu · Alpine.