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CVE-2019-1301

27
FAUCET Score

CVE-2019-1301 is a denial-of-service vulnerability in Microsoft .NET Core and PowerShell Core, stemming from improper handling of web requests. This high-severity vulnerability (CVSS 7.5) can be exploited remotely without user interaction, leading to a denial of service. While no public exploit code or active exploitation has been observed, the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.1CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_core:2.1:*:*:*:*:*:*:*
2.2CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_core:2.2:*:*:*:*:*:*:*
6.1CPE matchmatch criteria
cpe:2.3:a:microsoft:powershell_core:6.1:*:*:*:*:*:*:*
6.2CPE matchmatch criteria
cpe:2.3:a:microsoft:powershell_core:6.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.33%
Probability of exploitation in next 30 days
EPSS Percentile
91.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0533 is in the 86th percentile among its peer group of 51,466 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (12)

microsoftpatch availablevia msrc
Product: .NET Core 2.2
View patch
microsoftpatch availablevia msrc
Product: .NET Core 2.1
View patch
microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: PowerShell Core 6.1
View patch
microsoftpatch availablevia msrc
Product: PowerShell Core 6.2
View patch
nugetpatch availablevia ghsa
Product: System.Management.AutomationFixed in: 6.2.3
nugetpatch availablevia ghsa
Product: System.Management.AutomationFixed in: 6.1.6
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: dotnet-0:2.1.509-1.el8_0
View patch
redhatpatch availablevia redhat_api
Product: .NET Core on Red Hat Enterprise LinuxFixed in: rh-dotnet22-dotnet-0:2.2.109-1.el7
View patch
redhatpatch availablevia redhat_api
Product: .NET Core on Red Hat Enterprise LinuxFixed in: rh-dotnet22-0:2.2-9.el7
View patch
redhatpatch availablevia redhat_api
Product: .NET Core on Red Hat Enterprise LinuxFixed in: rh-dotnet21-dotnet-0:2.1.509-1.el7
View patch
redhatpatch availablevia redhat_api
Product: .NET Core on Red Hat Enterprise LinuxFixed in: rh-dotnet21-0:2.1-12.el7
View patch

Vendor Advisories (3)

nugetGHSA-62gw-3rmj-wmp2high

High severity vulnerability that affects System.Management.Automation

Sep 13, 2019
microsoft2019-Sep/CVE-2019-1301Important

.NET Core Denial of Service Vulnerability

Sep 10, 2019
redhatCVE-2019-1301Moderate

dotnet: System.Net.Sockets.dll Socket.ConnectAsync Denial of Service

Sep 10, 2019

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2019-1301
PatchVendor Advisory