.NET Core
CVE-2019-1301 — .NET Core Denial of Service Vulnerability
Executive Summary
A denial of service vulnerability exists when .NET Core improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Core web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET Core application. The update addresses the vulnerability by correcting how the .NET Core web application handles web requests.
Overview
7.5
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
EPSS Score
0.0533
probability of exploitation in the next 30 days
0.9176 percentile - updated 2026-07-25
View on FIRST.org
Affected Products
4 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| .NET Core 2.1 | Release Notes (Security Update) |
Important | Denial of Service | Maybe |
| .NET Core 2.2 | Release Notes (Security Update) |
Important | Denial of Service | Maybe |
| PowerShell Core 6.1 | Release Notes (Security Update) |
Important | Denial of Service | Maybe |
| PowerShell Core 6.2 | Release Notes (Security Update) |
Important | Denial of Service | Maybe |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
Release Notes |
Security Update | Maybe |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Paul Ryman of VMware Sydney Engineering Team
References
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