.NET Denial of Service Vulnerability
Priority HIGH 72CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, Red Hat and Microsoft. Impact type from Microsoft.
Summary
.NET Denial of Service Vulnerability
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02707 86th percentileScored 2026-11-07
Fix Fixed Red Hat: 15 advisoriesMicrosoft: 3 updates
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
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 6.0 | 6.0.0 to before 6.0.27 | 6.0.27 | Patch available | CNA |
| Microsoft | .NET 7.0 | 7.0.0 to before 7.0.16 | 7.0.16 | Patch available | CNA |
| Microsoft | .NET 8.0 | 8.0 to before 8.0.2 | 8.0.2 | Patch available | CNA |
| Microsoft | Microsoft Visual Studio 2022 version 17.4 | 17.4.0 to before 17.4.16 | 17.4.16 | Patch available | CNA |
| Microsoft | Microsoft Visual Studio 2022 version 17.6 | 17.6.0 to before 17.6.12 | 17.6.12 | Patch available | CNA |
| Microsoft | Microsoft Visual Studio 2022 version 17.8 | 17.8.0 to before 17.8.7 | 17.8.7 | Patch available | CNA |
- .NET 6.0 VendorMicrosoft Affected 6.0.0 to before 6.0.27 Fixed in 6.0.27 Patch available CNA
- .NET 7.0 VendorMicrosoft Affected 7.0.0 to before 7.0.16 Fixed in 7.0.16 Patch available CNA
- .NET 8.0 VendorMicrosoft Affected 8.0 to before 8.0.2 Fixed in 8.0.2 Patch available CNA
- Microsoft Visual Studio 2022 version 17.4 VendorMicrosoft Affected 17.4.0 to before 17.4.16 Fixed in 17.4.16 Patch available CNA
- Microsoft Visual Studio 2022 version 17.6 VendorMicrosoft Affected 17.6.0 to before 17.6.12 Fixed in 17.6.12 Patch available CNA
- Microsoft Visual Studio 2022 version 17.8 VendorMicrosoft Affected 17.8.0 to before 17.8.7 Fixed in 17.8.7 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* | 6.0.0 to before 6.0.27; 7.0.0 to before 7.0.16; 8.0.0 to before 8.0.2 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* | 17.4.0 to before 17.4.16; 17.6.0 to before 17.6.12; 17.8.0 to before 17.8.7 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* Versions 6.0.0 to before 6.0.27; 7.0.0 to before 7.0.16; 8.0.0 to before 8.0.2 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* Versions 17.4.0 to before 17.4.16; 17.6.0 to before 17.6.12; 17.8.0 to before 17.8.7 Vulnerable ·Microsoft
Remediation
Red Hat 15 advisories
- RHSA-2024:3340 Released 2024-05-23 · Red Hat rating Important.NET 7.0 security update
- Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-7.0-7.0.19-1.el8_10, aspnetcore-targeting-pack-7.0-7.0.19-1.el8_10, dotnet-apphost-pack-7.0-7.0.19-1.el8_10 +6
- Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-7.0-source-built-artifacts-7.0.119-1.el8_10
- RHSA-2024:2843 Released 2024-05-15 · Red Hat rating Important.NET 7.0 security update
- Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-7.0-7.0.19-1.el9_4, aspnetcore-targeting-pack-7.0-7.0.19-1.el9_4, dotnet-apphost-pack-7.0-7.0.19-1.el9_4 +6
- Red Hat Enterprise Linux CRB (v. 9) dotnet-sdk-7.0-source-built-artifacts-7.0.119-1.el9_4
- RHSA-2024:1643 Released 2024-04-02 · Red Hat rating Important.NET 7.0 security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) dotnet-sdk-7.0-source-built-artifacts-7.0.116-1.el9_2
- Red Hat Enterprise Linux AppStream EUS (v.9.2) aspnetcore-runtime-7.0-7.0.16-1.el9_2, aspnetcore-targeting-pack-7.0-7.0.16-1.el9_2, dotnet-apphost-pack-7.0-7.0.16-1.el9_2 +8
Show 12 more Red Hat advisories
- RHSA-2024:1641 Released 2024-04-02 · Red Hat rating Important.NET 7.0 security update
- Red Hat CodeReady Linux Builder EUS (v.8.8) dotnet-sdk-7.0-source-built-artifacts-7.0.116-1.el8_8
- Red Hat Enterprise Linux AppStream EUS (v.8.8) aspnetcore-runtime-7.0-7.0.16-1.el8_8, aspnetcore-targeting-pack-7.0-7.0.16-1.el8_8, dotnet-7.0.116-1.el8_8 +9
- RHSA-2024:1554 Released 2024-03-27 · Red Hat rating Important.NET 6.0 security update
- Red Hat CodeReady Linux Builder EUS (v.8.6) dotnet-sdk-6.0-source-built-artifacts-6.0.127-1.el8_6
- Red Hat Enterprise Linux AppStream EUS (v.8.6) aspnetcore-runtime-6.0-6.0.27-1.el8_6, aspnetcore-targeting-pack-6.0-6.0.27-1.el8_6, dotnet-6.0.127-1.el8_6 +9
- RHSA-2024:1553 Released 2024-03-27 · Red Hat rating Important.NET 6.0 security update
- Red Hat CodeReady Linux Builder EUS (v.8.8) dotnet-sdk-6.0-source-built-artifacts-6.0.127-1.el8_8
- Red Hat Enterprise Linux AppStream EUS (v.8.8) aspnetcore-runtime-6.0-6.0.27-1.el8_8, aspnetcore-targeting-pack-6.0-6.0.27-1.el8_8, dotnet-apphost-pack-6.0-6.0.27-1.el8_8 +6
- RHSA-2024:1555 Released 2024-03-27 · Red Hat rating Important.NET 6.0 security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) dotnet-sdk-6.0-source-built-artifacts-6.0.127-1.el9_2.1
- Red Hat Enterprise Linux AppStream EUS (v.9.2) aspnetcore-runtime-6.0-6.0.27-1.el9_2.1, aspnetcore-targeting-pack-6.0-6.0.27-1.el9_2.1, dotnet-apphost-pack-6.0-6.0.27-1.el9_2.1 +6
- RHSA-2024:1552 Released 2024-03-27 · Red Hat rating Important.NET 6.0 security update
- Red Hat CodeReady Linux Builder EUS (v.9.0) dotnet-sdk-6.0-source-built-artifacts-6.0.127-1.el9_0
- Red Hat Enterprise Linux AppStream EUS (v.9.0) aspnetcore-runtime-6.0-6.0.27-1.el9_0, aspnetcore-targeting-pack-6.0-6.0.27-1.el9_0, dotnet-apphost-pack-6.0-6.0.27-1.el9_0 +8
- RHSA-2024:0848 Released 2024-02-15 · Red Hat rating Important.NET 8.0 security update
- Red Hat CodeReady Linux Builder (v. 9) dotnet-sdk-8.0-source-built-artifacts-8.0.102-2.el9_3
- Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-8.0-8.0.2-2.el9_3, aspnetcore-runtime-dbg-8.0-8.0.2-2.el9_3, aspnetcore-targeting-pack-8.0-8.0.2-2.el9_3 +11
- RHSA-2024:0827 Released 2024-02-15 · Red Hat rating Important.NET 8.0 security update
- Red Hat CodeReady Linux Builder (v. 8) dotnet-sdk-8.0-source-built-artifacts-8.0.102-2.el8_9
- Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-8.0-8.0.2-2.el8_9, aspnetcore-runtime-dbg-8.0-8.0.2-2.el8_9, aspnetcore-targeting-pack-8.0-8.0.2-2.el8_9 +12
- RHSA-2024:0814 Released 2024-02-14 · Red Hat rating Important.NET 6.0 security, bug fix, and enhancement update
- .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7) rh-dotnet60-aspnetcore-runtime-6.0-6.0.27-1.el7_9, rh-dotnet60-aspnetcore-targeting-pack-6.0-6.0.27-1.el7_9, rh-dotnet60-dotnet-6.0.127-1.el7_9 +9
- .NET Core on Red Hat Enterprise Linux Server (v. 7) rh-dotnet60-aspnetcore-runtime-6.0-6.0.27-1.el7_9, rh-dotnet60-aspnetcore-targeting-pack-6.0-6.0.27-1.el7_9, rh-dotnet60-dotnet-6.0.127-1.el7_9 +9
- .NET Core on Red Hat Enterprise Linux Workstation (v. 7) rh-dotnet60-aspnetcore-runtime-6.0-6.0.27-1.el7_9, rh-dotnet60-aspnetcore-targeting-pack-6.0-6.0.27-1.el7_9, rh-dotnet60-dotnet-6.0.127-1.el7_9 +9
- RHSA-2024:0806 Released 2024-02-13 · Red Hat rating Importantdotnet7.0 security update
- Red Hat CodeReady Linux Builder (v. 8) dotnet-sdk-7.0-source-built-artifacts-7.0.116-1.el8_9
- Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-7.0-7.0.16-1.el8_9, aspnetcore-targeting-pack-7.0-7.0.16-1.el8_9, dotnet-apphost-pack-7.0-7.0.16-1.el8_9 +6
- RHSA-2024:0808 Released 2024-02-13 · Red Hat rating Importantdotnet6.0 security update
- Red Hat CodeReady Linux Builder (v. 8) dotnet-sdk-6.0-source-built-artifacts-6.0.127-1.el8_9
- Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-6.0-6.0.27-1.el8_9, aspnetcore-targeting-pack-6.0-6.0.27-1.el8_9, dotnet-apphost-pack-6.0-6.0.27-1.el8_9 +6
- RHSA-2024:0805 Released 2024-02-13 · Red Hat rating Importantdotnet7.0 security update
- Red Hat CodeReady Linux Builder (v. 9) dotnet-sdk-7.0-source-built-artifacts-7.0.116-1.el9_3
- Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-7.0-7.0.16-1.el9_3, aspnetcore-targeting-pack-7.0-7.0.16-1.el9_3, dotnet-apphost-pack-7.0-7.0.16-1.el9_3 +6
- RHSA-2024:0807 Released 2024-02-13 · Red Hat rating Importantdotnet6.0 security update
- Red Hat CodeReady Linux Builder (v. 9) dotnet-sdk-6.0-source-built-artifacts-6.0.127-1.el9_3
- Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-6.0-6.0.27-1.el9_3, aspnetcore-targeting-pack-6.0-6.0.27-1.el9_3, dotnet-apphost-pack-6.0-6.0.27-1.el9_3 +6
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2024:0814 |
| .NET Core on Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2024:0814 |
| .NET Core on Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2024:0814 |
| Red Hat CodeReady Linux Builder (v. 8) | Fixed | RHSA-2024:0806, RHSA-2024:0808, RHSA-2024:0827 |
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2024:0805, RHSA-2024:0807, RHSA-2024:0848 |
| Red Hat CodeReady Linux Builder EUS (v.8.6) | Fixed | RHSA-2024:1554 |
| Red Hat CodeReady Linux Builder EUS (v.8.8) | Fixed | RHSA-2024:1553, RHSA-2024:1641 |
| Red Hat CodeReady Linux Builder EUS (v.9.0) | Fixed | RHSA-2024:1552 |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:1555, RHSA-2024:1643 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2024:0806, RHSA-2024:0808, RHSA-2024:0827, RHSA-2024:3340 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:0805, RHSA-2024:0807, RHSA-2024:0848, RHSA-2024:2843 |
| Red Hat Enterprise Linux AppStream EUS (v.8.6) | Fixed | RHSA-2024:1554 |
| Red Hat Enterprise Linux AppStream EUS (v.8.8) | Fixed | RHSA-2024:1553, RHSA-2024:1641 |
| Red Hat Enterprise Linux AppStream EUS (v.9.0) | Fixed | RHSA-2024:1552 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:1555, RHSA-2024:1643 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:3340 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:2843 |
Microsoft
Microsoft's page for this CVE →
- Impact
- Denial of Service
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Less Likely
| Product | Status | Plan or fix |
|---|---|---|
| Microsoft Visual Studio 2022 version 17.4 | Fixed | 17.4.16 · Security Update |
| Microsoft Visual Studio 2022 version 17.6 | Fixed | 17.6.12 · Security Update |
| Microsoft Visual Studio 2022 version 17.8 | Fixed | 17.8.7 · Security Update |
Timeline
- 2026-10-02 Threatist record created from CVE-2024-21404
- 2026-10-03 Alias added: GHSA-q5x8-3vm4-xrh9
References
More Microsoft Asp.net Core vulnerabilities
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2023-19596 .NET and Visual Studio Denial of Service Vulnerability KEVCVSS 3.1HIGH 7.5
- TI-2025-34970 ASP.NET Security Feature Bypass Vulnerability CVSS 3.1CRITICAL 9.9
- TI-2023-18092 ASP.NET Core Denial of Service Vulnerability CVSS 3.1HIGH 8.2
- TI-2023-18392 ASP.NET Core Security Feature Bypass Vulnerability CVSS 3.1MEDIUM 6.2
- TI-2026-29147 ASP.NET Core Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.1
Sources
- CVE-2024-21404 · CVE Program
- CVE-2024-21404 · NVD
- FIRST EPSS
- GHSA-q5x8-3vm4-xrh9 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-21404 · Microsoft Security Update Guide
- CVE-2024-21404 · Red Hat security data · CC BY 4.0
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