.NET Remote Code Execution Vulnerability
Priority LOW 38CWE-122Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 4 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub, Red Hat and Microsoft. Impact type from Microsoft.
Summary
.NET Remote Code Execution Vulnerability
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01722 77th percentileScored 2026-11-07
Fix Partial Microsoft.NetCore.App.Runtime.linux-arm (NuGet): 9.0.1Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet): 9.0.1+10 more productsRed Hat: 1 advisoryMicrosoft: 1 updateRed Hat: 4 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | .NET 9.0 | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | CNA |
| Microsoft | Microsoft Visual Studio 2022 version 17.10 | 17.10.0 to before 17.10.10 | 17.10.10 | Patch available | CNA |
| Microsoft | Microsoft Visual Studio 2022 version 17.12 | 17.12.0 to before 17.12.4 | 17.12.4 | Patch available | CNA |
| Microsoft | Microsoft Visual Studio 2022 version 17.6 | 17.6.0 to before 17.6.22 | 17.6.22 | Patch available | CNA |
| Microsoft | Microsoft Visual Studio 2022 version 17.8 | 17.8.0 to before 17.8.17 | 17.8.17 | Patch available | CNA |
| Microsoft | PowerShell 7.5 | 7.5.0 to before 7.5.0 | 7.5.0 | Patch available | CNA |
| — | Microsoft.NetCore.App.Runtime.linux-arm (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
| — | Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
| — | Microsoft.NetCore.App.Runtime.linux-musl-arm (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
| — | Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
| — | Microsoft.NetCore.App.Runtime.linux-musl-x64 (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
| — | Microsoft.NetCore.App.Runtime.linux-x64 (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
| — | Microsoft.NetCore.App.Runtime.osx-arm64 (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
| — | Microsoft.NetCore.App.Runtime.osx-x64 (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
| — | Microsoft.NetCore.App.Runtime.win-arm (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
| — | Microsoft.NetCore.App.Runtime.win-arm64 (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
| — | Microsoft.NetCore.App.Runtime.win-x64 (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
| — | Microsoft.NetCore.App.Runtime.win-x86 (NuGet) | 9.0.0 to before 9.0.1 | 9.0.1 | Patch available | GHSA-p54p-p3qm-8vgj |
- .NET 9.0 VendorMicrosoft Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available CNA
- Microsoft Visual Studio 2022 version 17.10 VendorMicrosoft Affected 17.10.0 to before 17.10.10 Fixed in 17.10.10 Patch available CNA
- Microsoft Visual Studio 2022 version 17.12 VendorMicrosoft Affected 17.12.0 to before 17.12.4 Fixed in 17.12.4 Patch available CNA
- Microsoft Visual Studio 2022 version 17.6 VendorMicrosoft Affected 17.6.0 to before 17.6.22 Fixed in 17.6.22 Patch available CNA
- Microsoft Visual Studio 2022 version 17.8 VendorMicrosoft Affected 17.8.0 to before 17.8.17 Fixed in 17.8.17 Patch available CNA
- PowerShell 7.5 VendorMicrosoft Affected 7.5.0 to before 7.5.0 Fixed in 7.5.0 Patch available CNA
- Microsoft.NetCore.App.Runtime.linux-arm (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
- Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
- Microsoft.NetCore.App.Runtime.linux-musl-arm (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
- Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
- Microsoft.NetCore.App.Runtime.linux-musl-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
- Microsoft.NetCore.App.Runtime.linux-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
- Microsoft.NetCore.App.Runtime.osx-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
- Microsoft.NetCore.App.Runtime.osx-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
- Microsoft.NetCore.App.Runtime.win-arm (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
- Microsoft.NetCore.App.Runtime.win-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
- Microsoft.NetCore.App.Runtime.win-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
- Microsoft.NetCore.App.Runtime.win-x86 (NuGet) Vendor— Affected 9.0.0 to before 9.0.1 Fixed in 9.0.1 Patch available GHSA-p54p-p3qm-8vgj
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:.net:9.0.0:*:*:*:*:*:*:* | 9.0.0 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:powershell:7.5:*:*:*:*:*:*:* | 7.5 | Vulnerable | Microsoft |
| cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Apple |
| cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Linux |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* | 17.6.0 to before 17.6.22; 17.8.0 to before 17.8.17; 17.10.0 to before 17.10.10; 17.12.0 to before 17.12.4 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:.net:9.0.0:*:*:*:*:*:*:* Versions 9.0.0 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:powershell:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Microsoft
- cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple
- cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* Versions 17.6.0 to before 17.6.22; 17.8.0 to before 17.8.17; 17.10.0 to before 17.10.10; 17.12.0 to before 17.12.4 Vulnerable ·Microsoft
Remediation
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.linux-arm (NuGet) Fixed in 9.0.1 Advisory →
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet) Fixed in 9.0.1 Advisory →
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.linux-musl-arm (NuGet) Fixed in 9.0.1 Advisory →
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet) Fixed in 9.0.1 Advisory →
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.linux-musl-x64 (NuGet) Fixed in 9.0.1 Advisory →
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.linux-x64 (NuGet) Fixed in 9.0.1 Advisory →
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.osx-arm64 (NuGet) Fixed in 9.0.1 Advisory →
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.osx-x64 (NuGet) Fixed in 9.0.1 Advisory →
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.win-arm (NuGet) Fixed in 9.0.1 Advisory →
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.win-arm64 (NuGet) Fixed in 9.0.1 Advisory →
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.win-x64 (NuGet) Fixed in 9.0.1 Advisory →
- Fix · GHSA-p54p-p3qm-8vgj Microsoft.NetCore.App.Runtime.win-x86 (NuGet) Fixed in 9.0.1 Advisory →
Red Hat 1 advisory
- RHSA-2025:0382 Released 2025-01-16 · Red Hat rating Important.NET 9.0 security update
- Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-9.0-9.0.1-1.el8_10, aspnetcore-runtime-dbg-9.0-9.0.1-1.el8_10, aspnetcore-targeting-pack-9.0-9.0.1-1.el8_10 +13
- Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-9.0-source-built-artifacts-9.0.102-1.el8_10
Microsoft 1 update
- Security Update
- .NET 9.0 installed on Linux 9.0.1
- .NET 9.0 installed on Mac OS 9.0.1
- .NET 9.0 installed on Windows 9.0.1
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 9 | Affected | No fix planned: Out of support scope |
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | — |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2025:0382 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | — |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2025:0382 |
Not affected: 3 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Microsoft
Microsoft's page for this CVE →
- Impact
- Remote Code Execution
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Less Likely
| Product | Status | Plan or fix |
|---|---|---|
| Microsoft Visual Studio 2022 version 17.10 | Fixed | 17.10.10 · Security Update |
| Microsoft Visual Studio 2022 version 17.12 | Fixed | 17.12.4 · Security Update |
| Microsoft Visual Studio 2022 version 17.6 | Fixed | 17.6.22 · Security Update |
| Microsoft Visual Studio 2022 version 17.8 | Fixed | 17.8.17 · Security Update |
| PowerShell 7.5 installed on Linux | Fixed | 7.5.0 · Security Update |
| PowerShell 7.5 installed on MacOS | Fixed | 7.5.0 · Security Update |
| PowerShell 7.5 installed on Windows | Fixed | 7.5.0 · Security Update |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-21171
- 2026-10-03 Alias added: GHSA-p54p-p3qm-8vgj
References
More Microsoft .net vulnerabilities
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- TI-2023-19588 Microsoft QUIC Denial of Service Vulnerability CVSS 3.1HIGH 7.5
- TI-2024-14152 .NET and Visual Studio Denial of Service Vulnerability CVSS 3.1HIGH 7.5
- TI-2021-08380 .NET Core Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-21171 · CVE Program
- CVE-2025-21171 · NVD
- FIRST EPSS
- GHSA-p54p-p3qm-8vgj · GitHub Advisory Database · CC BY 4.0
- CVE-2025-21171 · Microsoft Security Update Guide
- CVE-2025-21171 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences