CVE-2023-38180
HighExploitedPublic exploit.NET Denial of Service Vulnerability
Published Aug 9, 2023 · Updated Sep 8, 2026 · Also known as BIT-aspnet-core-2023-38180, BIT-dotnet-2023-38180, BIT-dotnet-sdk-2023-38180, GHSA-vmch-3w2x-vhgq, UBUNTU-CVE-2023-38180
Key Facts
Patch immediately- CVE-2023-38180 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Asp.net Core (Microsoft), .net (Microsoft), Visual Studio 2022 (Microsoft) and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 9, 2023. Public exploit code is available.
- EPSS estimates a 14% probability of exploitation in the next 30 days.
- Fixed versions are available, including .NET 6.0 6.0.21, .NET 7.0 7.0.10, ASP.NET Core 2.1 2.1.40.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (30-day exploit likelihood)
14%
Higher than 96.5% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2023-38180 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
.NET and Visual Studio Denial of Service Vulnerability
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Aug 9, 2023 | Aug 30, 2023 | Not reported |
| Industry KEV feed | Aug 9, 2023 | Aug 30, 2023 | Not reported |
| CIRCL KEV | Aug 9, 2023 | Aug 30, 2023 | Not reported |
| ENISA EUVD | Aug 9, 2023 | n/a | Not reported |
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected Products
97 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Asp.net CoreMicrosoft | See advisory | 2.1.40 |
| .netMicrosoft | See advisory | 6.0.21 |
| Visual Studio 2022Microsoft | See advisory | 17.2.18 |
| FedoraFedoraproject | 37, 38 | n/a |
| dotnet6-buildalpine | See advisory | 6.0.121-r0 |
Patched Releases
.NET 6.0
6.0.21
.NET 7.0
7.0.10
ASP.NET Core 2.1
2.1.40
aspnet-core
2.1.40
aspnetcore-runtime-6.0
6.0.21-1.0.1.el8_8, 6.0.21-1.0.1.el9_2, 6.0.21-1.amzn2023.0.2
aspnetcore-runtime-7.0
7.0.10-1.0.1.el8_8, 7.0.10-1.0.1.el9_2
aspnetcore-targeting-pack-6.0
6.0.21-1.0.1.el8_8, 6.0.21-1.0.1.el9_2, 6.0.21-1.amzn2023.0.2
aspnetcore-targeting-pack-7.0
7.0.10-1.0.1.el8_8, 7.0.10-1.0.1.el9_2
dotnet
6.0.121-1.amzn2023.0.2, 6.0.21, 7.0.10, 7.0.110-1.0.1.el8_8
dotnet-apphost-pack-6.0
6.0.21-1.0.1.el8_8, 6.0.21-1.0.1.el9_2, 6.0.21-1.amzn2023.0.2
dotnet-apphost-pack-7.0
7.0.10-1.0.1.el8_8, 7.0.10-1.0.1.el9_2
dotnet-host
6.0.21-1.amzn2023.0.2, 7.0.10-1.0.1.el8_8, 7.0.10-1.0.1.el9_2
dotnet-hostfxr-6.0
6.0.21-1.0.1.el8_8, 6.0.21-1.0.1.el9_2, 6.0.21-1.amzn2023.0.2
dotnet-hostfxr-7.0
7.0.10-1.0.1.el8_8, 7.0.10-1.0.1.el9_2
dotnet-runtime
6.0.36-1.ph4
dotnet-runtime-6.0
6.0.21-1.0.1.el8_8, 6.0.21-1.0.1.el9_2, 6.0.21-1.amzn2023.0.2
dotnet-runtime-7.0
7.0.10-1.0.1.el8_8, 7.0.10-1.0.1.el9_2
dotnet-sdk
6.0.21, 7.0.10, 8.0.407-1.ph5
dotnet-sdk-6.0
6.0.121-1.0.1.el8_8, 6.0.121-1.0.1.el9_2, 6.0.121-1.amzn2023.0.2
dotnet-sdk-6.0-source-built-artifacts
6.0.121-1.0.1.el8_8, 6.0.121-1.0.1.el9_2, 6.0.121-1.amzn2023.0.2
dotnet-sdk-7.0
7.0.110-1.0.1.el8_8, 7.0.110-1.0.1.el9_2
dotnet-sdk-7.0-source-built-artifacts
7.0.110-1.0.1.el8_8, 7.0.110-1.0.1.el9_2
dotnet-targeting-pack-6.0
6.0.21-1.0.1.el8_8, 6.0.21-1.0.1.el9_2, 6.0.21-1.amzn2023.0.2
dotnet-targeting-pack-7.0
7.0.10-1.0.1.el8_8, 7.0.10-1.0.1.el9_2
dotnet-templates-6.0
6.0.121-1.0.1.el8_8, 6.0.121-1.0.1.el9_2, 6.0.121-1.amzn2023.0.2
Timeline
Publicly disclosed
Aug 9, 2023
Added to CISA KEV
Aug 9, 2023
Added to Industry KEV feed
Aug 9, 2023
Added to CIRCL KEV
Aug 9, 2023
Added to ENISA EUVD
Aug 9, 2023
Last updated
Sep 8, 2026
Weakness Type
- CWE-400 Uncontrolled Resource Consumption
References
- advisoryRHSA-2023:4639
- advisoryRHSA-2023:4640
- advisoryRHSA-2023:4641
- advisoryRHSA-2023:4642
- advisoryRHSA-2023:4643
FAQ
Common Questions.
.NET and Visual Studio Denial of Service Vulnerability
Affected: Asp.net Core (Microsoft); .net (Microsoft); Visual Studio 2022 (Microsoft), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 9, 2023.
Yes. It was added on Aug 9, 2023 with a federal remediation due date of Aug 30, 2023.
Public exploit code is available.
Fixed versions are available, including .NET 6.0 6.0.21, .NET 7.0 7.0.10, ASP.NET Core 2.1 2.1.40.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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