CVE-2017-11883
Denial of service in ASP.NET Core
.NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka ".NET CORE Denial Of Service Vulnerability".
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
.NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka ".NET CORE Denial Of Service Vulnerability".
- Record
CVE-2017-11883- CVSS 3.0
- 7.5 High
CVSS:3.0/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
.NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka ".NET CORE Denial Of Service Vulnerability".
- Record
CVE-2017-11883- Updated
- 2026-11-02
EUVDEUVD-2022-3738 No score
.NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka ".NET CORE Denial Of Service Vulnerability".
- Record
EUVD-2022-3738- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f9jc-rrm2-pmfg
Denial of service in ASP.NET Core
.NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka ".NET CORE Denial Of Service Vulnerability".
- Record
GHSA-f9jc-rrm2-pmfg- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-f9jc-rrm2-pmfg
Denial of service in ASP.NET Core
.NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka ".NET CORE Denial Of Service Vulnerability".
- Record
GHSA-f9jc-rrm2-pmfg- CVSS 3.0
- 7.5 High
CVSS:3.0/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.Server.WebListenerNuGet |
1.0.0 up to 1.0.6 | 1.0.6 |
Microsoft.AspNetCore.Server.WebListenerNuGet |
1.1.0 up to 1.1.4 | 1.1.4 |
Microsoft.Net.Http.ServerNuGet |
1.0.0 up to 1.0.6 | 1.0.6 |
Microsoft.Net.Http.ServerNuGet |
1.1.0 up to 1.1.4 | 1.1.4 |
Microsoft.AspNetCore.Server.HttpSysNuGet |
2.0.0 up to 2.0.2 | 2.0.2 |
Microsoft.AspNetCore.Server.WebListenerNuGet |
1.0.0 up to 1.0.6, plus listed versions 1.0.11.0.21.0.31.0.41.0.5 |
1.0.6 |
Microsoft.AspNetCore.Server.WebListenerNuGet |
1.1.0 up to 1.1.4, plus listed versions 1.1.11.1.21.1.3 |
1.1.4 |
Microsoft.Net.Http.ServerNuGet |
1.0.0 up to 1.0.6, plus listed versions 1.0.11.0.21.0.31.0.41.0.5 |
1.0.6 |
Microsoft.Net.Http.ServerNuGet |
1.1.0 up to 1.1.4, plus listed versions 1.1.11.1.21.1.3 |
1.1.4 |
Microsoft.AspNetCore.Server.HttpSysNuGet |
2.0.0 up to 2.0.2, plus listed versions 2.0.1 |
2.0.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-11883 is a high vulnerability (CVSS 7.5) in Microsoft Asp.net, published November 15, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 8.53%, the 95th percentile. Fixed in Microsoft.AspNetCore.Server.WebListener 1.0.6.