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CVE-2023-38178

24
FAUCET Score

CVE-2023-38178 is a denial-of-service vulnerability affecting Microsoft .NET Core and Visual Studio 2022. With a CVSS score of 7.5 (High), it allows an unauthenticated attacker to cause a denial of service with low attack complexity over the network. There is no evidence of active exploitation, nor is public exploit code available, and it has received minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
6.0.0CPE matchmatch criteria
cpe:2.3:a:microsoft:.net:6.0.0:-:*:*:*:*:*:*
>= 17.2.0, < 17.2.18CPE matchmatch criteria
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
>= 17.4.0, < 17.4.10CPE matchmatch criteria
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*

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
2.56%
Probability of exploitation in next 30 days
EPSS Percentile
83.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0256 is in the 71st percentile among its peer group of 51,553 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 nvd_reference
View patch
microsoftpatch availablevia msrc
Product: .NET 6.0Fixed in: 6.0.21
View patch
microsoftpatch availablevia msrc
Product: Microsoft Visual Studio 2022 version 17.2Fixed in: 17.2.18
View patch
microsoftpatch availablevia msrc
Product: Microsoft Visual Studio 2022 version 17.4Fixed in: 17.4.10
View patch
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.App.Runtime.win-x86Fixed in: 7.0.10
nugetpatch availablevia ghsa
Product: Microsoft.NetCore.App.Runtime.win-armFixed in: 7.0.10
nugetpatch availablevia ghsa
Product: Microsoft.NetCore.App.Runtime.win-arm64Fixed in: 7.0.10
nugetpatch availablevia ghsa
Product: Microsoft.NetCore.App.Runtime.win-x64Fixed in: 7.0.10
nugetpatch availablevia ghsa
Product: Microsoft.NetCore.App.Runtime.win-x86Fixed in: 7.0.10
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.App.Runtime.win-arm64Fixed in: 7.0.10
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.App.Runtime.win-armFixed in: 7.0.10
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.App.Runtime.win-x64Fixed in: 7.0.10

Vendor Advisories (3)

nugetGHSA-p57v-gv7q-4xfmhigh

.NET Denial of Service Vulnerability

Aug 9, 2023
microsoft2023-Aug/CVE-2023-38178Important

.NET Core and Visual Studio Denial of Service Vulnerability

Aug 8, 2023
redhatCVE-2023-38178Moderate

dotnet: ASP.NET Kestrel stream flow control leads to Denial of Service

Aug 8, 2023

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2023-38178
PatchVendor Advisory