.NET Core
CVE-2018-8409 — System.IO.Pipelines Denial of Service
Executive Summary
A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests. An attacker who successfully exploited this vulnerability could cause a denial of service against an application that is leveraging System.IO.Pipelines. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by providing specially crafted requests to the application. The update addresses the vulnerability by correcting how System.IO.Pipelines handles requests.
Overview
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
EPSS Score
0.06558
probability of exploitation in the next 30 days
0.932 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
3 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| .NET Core 2.1 | Release Notes (Security Update) |
Important | Denial of Service | Yes |
| ASP.NET Core 2.1 | Release Notes (Security Update) |
Important | Denial of Service | Yes |
| System.IO.Pipelines | Release Notes (Security Update) |
Important | Denial of Service | Yes |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
Release Notes |
Security Update | Yes |
Exploits & PoC
No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
None
References
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