CVE-2018-8409
Denial of service vulnerability exists when System.IO.Pipelines improperly handles requests
A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka "System.IO.Pipelines Denial of Service." This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka "System.IO.Pipelines Denial of Service." This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.
- Record
CVE-2018-8409- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka "System.IO.Pipelines Denial of Service." This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.
- Record
CVE-2018-8409- Updated
- 2026-11-02
EUVDEUVD-2018-0622 No score
A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka "System.IO.Pipelines Denial of Service." This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.
- Record
EUVD-2018-0622- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j378-6mmw-hqfr
Denial of service vulnerability exists when System.IO.Pipelines improperly handles requests
A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka "System.IO.Pipelines Denial of Service." This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.
- Record
GHSA-j378-6mmw-hqfr- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV
A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka "System.IO.Pipelines Denial of Service." This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.
- Record
CVE-2018-8409- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-j378-6mmw-hqfr
Denial of service vulnerability exists when System.IO.Pipelines improperly handles requests
A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka "System.IO.Pipelines Denial of Service." This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.
- Record
GHSA-j378-6mmw-hqfr- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
Microsoft.AspNetCore.AllNuGet |
2.1.0 to 2.1.3 | 2.1.4 |
Microsoft.AspNetCore.AppNuGet |
2.1.0 to 2.1.3 | 2.1.4 |
System.IO.PipelinesNuGet |
4.5.0 to 4.5.0 | 4.5.1 |
Microsoft.AspNetCore.AllNuGet |
2.1.0 up to 2.1.4, plus listed versions 2.1.12.1.22.1.3 |
2.1.4 |
Microsoft.AspNetCore.AppNuGet |
2.1.0 up to 2.1.4, plus listed versions 2.1.12.1.22.1.3 |
2.1.4 |
System.IO.PipelinesNuGet |
4.5.0 up to 4.5.1 | 4.5.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-8409 is a high vulnerability (CVSS 7.5) in Microsoft .net Core, published September 13, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.56%, the 93rd percentile. Fixed in Microsoft.AspNetCore.All 2.1.4.