---
id: CVE-2026-57108
title: .NET Denial of Service Vulnerability
summary: >-
  Access of resource using incompatible type ('type confusion') in .NET Core
  allows an unauthorized attacker to deny service over a network.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-843
vendor: Microsoft
product: .NET 10.0
affected:
  - .net_10.0 >= 10.0.0 < 10.0.10
  - .net_8.0 >= 8.0.0 < 8.0.29
  - .net_9.0 >= 9.0.0 < 9.0.18
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-07-14T18:01:16.350363Z'
published: '2026-07-14'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T18:24:51.288Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-57108'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57108'
    label: .NET Denial of Service Vulnerability
  - url: 'https://github.com/dotnet/runtime/security/advisories/GHSA-rp2p-6cmp-jxj9'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-57108'
  - url: 'https://github.com/dotnet/announcements/issues/408'
  - url: 'https://github.com/dotnet/runtime/issues/130707'
  - url: 'https://github.com/advisories/GHSA-rp2p-6cmp-jxj9'
tags:
  - cve.org
  - ghsa
  - nuget
epss: 0.01174
epssPercentile: 0.6619
aliases:
  - GHSA-rp2p-6cmp-jxj9
ecosystem: nuget
patched:
  - Microsoft.NetCore.App.Runtime.linux-arm 10.0.10
  - Microsoft.NetCore.App.Runtime.linux-arm64 10.0.10
  - Microsoft.NetCore.App.Runtime.linux-musl-arm 10.0.10
  - Microsoft.NetCore.App.Runtime.linux-musl-arm64 10.0.10
  - Microsoft.NetCore.App.Runtime.linux-musl-x64 10.0.10
  - Microsoft.NetCore.App.Runtime.linux-x64 10.0.10
  - Microsoft.NetCore.App.Runtime.osx-arm64 10.0.10
  - Microsoft.NetCore.App.Runtime.osx-x64 10.0.10
  - Microsoft.NetCore.App.Runtime.linux-arm 9.0.18
  - Microsoft.NetCore.App.Runtime.linux-arm64 9.0.18
  - Microsoft.NetCore.App.Runtime.linux-musl-arm 9.0.18
  - Microsoft.NetCore.App.Runtime.linux-musl-arm64 9.0.18
  - Microsoft.NetCore.App.Runtime.linux-musl-x64 9.0.18
  - Microsoft.NetCore.App.Runtime.linux-x64 9.0.18
  - Microsoft.NetCore.App.Runtime.osx-arm64 9.0.18
  - Microsoft.NetCore.App.Runtime.osx-x64 9.0.18
  - Microsoft.NetCore.App.Runtime.linux-arm 8.0.29
  - Microsoft.NetCore.App.Runtime.linux-arm64 8.0.29
  - Microsoft.NetCore.App.Runtime.linux-musl-arm 8.0.29
  - Microsoft.NetCore.App.Runtime.linux-musl-arm64 8.0.29
  - Microsoft.NetCore.App.Runtime.linux-musl-x64 8.0.29
  - Microsoft.NetCore.App.Runtime.linux-x64 8.0.29
  - Microsoft.NetCore.App.Runtime.osx-arm64 8.0.29
  - Microsoft.NetCore.App.Runtime.osx-x64 8.0.29
ingestedAt: '2026-07-20T22:43:34.896Z'
---

## Overview

Access of resource using incompatible type ('type confusion') in .NET Core allows an unauthorized attacker to deny service over a network.

## Affected

- `.net_10.0 >= 10.0.0 < 10.0.10`
- `.net_8.0 >= 8.0.0 < 8.0.29`
- `.net_9.0 >= 9.0.0 < 9.0.18`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-57108)

Affected packages:

- `Microsoft.NetCore.App.Runtime.linux-arm >= 10.0.0, <= 10.0.9`
- `Microsoft.NetCore.App.Runtime.linux-arm64 >= 10.0.0, <= 10.0.9`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm >= 10.0.0, <= 10.0.9`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm64 >= 10.0.0, <= 10.0.9`
- `Microsoft.NetCore.App.Runtime.linux-musl-x64 >= 10.0.0, <= 10.0.9`
- `Microsoft.NetCore.App.Runtime.linux-x64 >= 10.0.0, <= 10.0.9`
- `Microsoft.NetCore.App.Runtime.osx-arm64 >= 10.0.0, <= 10.0.9`
- `Microsoft.NetCore.App.Runtime.osx-x64 >= 10.0.0, <= 10.0.9`
- `Microsoft.NetCore.App.Runtime.linux-arm >= 9.0.0, <= 9.0.17`
- `Microsoft.NetCore.App.Runtime.linux-arm64 >= 9.0.0, <= 9.0.17`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm >= 9.0.0, <= 9.0.17`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm64 >= 9.0.0, <= 9.0.17`
- `Microsoft.NetCore.App.Runtime.linux-musl-x64 >= 9.0.0, <= 9.0.17`
- `Microsoft.NetCore.App.Runtime.linux-x64 >= 9.0.0, <= 9.0.17`
- `Microsoft.NetCore.App.Runtime.osx-arm64 >= 9.0.0, <= 9.0.17`
- `Microsoft.NetCore.App.Runtime.osx-x64 >= 9.0.0, <= 9.0.17`
- `Microsoft.NetCore.App.Runtime.linux-arm >= 8.0.0, <= 8.0.28`
- `Microsoft.NetCore.App.Runtime.linux-arm64 >= 8.0.0, <= 8.0.28`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm >= 8.0.0, <= 8.0.28`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm64 >= 8.0.0, <= 8.0.28`
- `Microsoft.NetCore.App.Runtime.linux-musl-x64 >= 8.0.0, <= 8.0.28`
- `Microsoft.NetCore.App.Runtime.linux-x64 >= 8.0.0, <= 8.0.28`
- `Microsoft.NetCore.App.Runtime.osx-arm64 >= 8.0.0, <= 8.0.28`
- `Microsoft.NetCore.App.Runtime.osx-x64 >= 8.0.0, <= 8.0.28`

Patched in:

- `Microsoft.NetCore.App.Runtime.linux-arm 10.0.10`
- `Microsoft.NetCore.App.Runtime.linux-arm64 10.0.10`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm 10.0.10`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm64 10.0.10`
- `Microsoft.NetCore.App.Runtime.linux-musl-x64 10.0.10`
- `Microsoft.NetCore.App.Runtime.linux-x64 10.0.10`
- `Microsoft.NetCore.App.Runtime.osx-arm64 10.0.10`
- `Microsoft.NetCore.App.Runtime.osx-x64 10.0.10`
- `Microsoft.NetCore.App.Runtime.linux-arm 9.0.18`
- `Microsoft.NetCore.App.Runtime.linux-arm64 9.0.18`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm 9.0.18`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm64 9.0.18`
- `Microsoft.NetCore.App.Runtime.linux-musl-x64 9.0.18`
- `Microsoft.NetCore.App.Runtime.linux-x64 9.0.18`
- `Microsoft.NetCore.App.Runtime.osx-arm64 9.0.18`
- `Microsoft.NetCore.App.Runtime.osx-x64 9.0.18`
- `Microsoft.NetCore.App.Runtime.linux-arm 8.0.29`
- `Microsoft.NetCore.App.Runtime.linux-arm64 8.0.29`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm 8.0.29`
- `Microsoft.NetCore.App.Runtime.linux-musl-arm64 8.0.29`
- `Microsoft.NetCore.App.Runtime.linux-musl-x64 8.0.29`
- `Microsoft.NetCore.App.Runtime.linux-x64 8.0.29`
- `Microsoft.NetCore.App.Runtime.osx-arm64 8.0.29`
- `Microsoft.NetCore.App.Runtime.osx-x64 8.0.29`

Source: https://github.com/advisories/GHSA-rp2p-6cmp-jxj9