CVE-2018-8409

HIGHNVD 7.5

7.5

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.

CVSS v3: 7.5
EG Score: —
EPSS: 94.5%
KEV: Not listed

Published

September 13, 2018

Last Modified

November 21, 2024

References (4)

secure@microsofthttp://www.securityfocus.com/bid/105223
secure@microsofthttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8409
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/105223
af854a3a-2127-422b-91ae-364da2661108https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8409

Affected Packages

(3 across 1 ecosystem)

NuGet(3)

Package	Vulnerable range	Fixed in	Dependents
Microsoft.AspNetCore.All	2.1.0, 2.1.1, 2.1.2, 2.1.3	2.1.4	—
Microsoft.AspNetCore.App	2.1.0, 2.1.1, 2.1.2, 2.1.3	2.1.4	—
System.IO.Pipelines	4.5.0	4.5.1	—

Data Freshness Timeline

(refreshed 6× in last 7d / 6× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 08:06 UTCOSV refresh

Frequently asked(5)

What is CVE-2018-8409?

CVE-2018-8409 is a high vulnerability published on September 13, 2018. 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.

When was CVE-2018-8409 disclosed?

CVE-2018-8409 was first published in the National Vulnerability Database on September 13, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-8409 actively exploited?

CVE-2018-8409 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-8409?

CVE-2018-8409 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2018-8409?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-8409, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2018-8409

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CVE-2018-8409

📅 Published

🔄 Last Modified

🔗 References (4)