NuGet (.NET)

Microsoft.AspNetCore.Server.Kestrel.Core Security Analysis

Microsoft.AspNetCore.Server.Kestrel.Core has 3 known security vulnerabilities in NuGet (.NET). Upgrade to version 2.3.6 or later to resolve all known issues. Data sourced from OSV, enriched with EPSS exploit probability and CISA KEV.

3 Vulnerabilities

Low Immediate Risk

No actively exploited vulnerabilities detected. Monitor and update in your next maintenance window.

Recommended safe version: 2.3.6

Upgrading to 2.3.6 or later resolves all 3 known vulnerabilities in Microsoft.AspNetCore.Server.Kestrel.Core. Run: dotnet add package Microsoft.AspNetCore.Server.Kestrel.Core --version 2.3.6

Is Microsoft.AspNetCore.Server.Kestrel.Core in your project?

Check if you're affected and upgrade to 2.3.6 to stay secure.

Start Free Scan Get Alerted When New CVEs Drop

Total

Critical

High

Medium

Low

Vulnerabilities

3 unique vulnerabilities — sorted by exploitation risk (KEV → EPSS → CVSS). Click a CVE/GHSA ID for full details.

CVE / GHSA	Severity	CVSS	EPSS	Summary	Affected	Fixed In
CVE-2025-55315 Microsoft Security Advisory CVE-2025-55315: .NET Security Feature Bypass Vulnerability	CRITICAL	9.9	—	Microsoft Security Advisory CVE-2025-55315: .NET Security Feature Bypass Vulnerability	0.0.1-alpha, 2.0.0, 2.0.0-preview1-final, 2.0.0-preview2-final (+18 more)	2.3.6
CVE-2021-1723 ASP.NET Core and Visual Studio Denial of Service Vulnerability	HIGH	7.5	—	ASP.NET Core and Visual Studio Denial of Service Vulnerability	0.0.1-alpha, 2.0.0, 2.0.0-preview1-final, 2.0.0-preview2-final (+12 more)	2.1.25
CVE-2018-0787 ASP.NET Core allow an elevation of privilege	HIGH	8.8	—	ASP.NET Core allow an elevation of privilege	2.0.0, 2.0.1	2.0.2

About This Data

Vulnerability data for Microsoft.AspNetCore.Server.Kestrel.Core is sourced from the Open Source Vulnerability (OSV) database, aggregating reports from GitHub Advisory Database, NIST NVD, and ecosystem-specific sources.

CVSS (Common Vulnerability Scoring System) scores reflect exploitability and impact. EPSS (Exploit Prediction Scoring System) scores indicate the probability of exploitation within the next 30 days. Vulnerabilities marked with are listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.