ASP.NET Core Denial of Service Vulnerability
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Microsoft | .NET 10.0 runtime | affected |
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| Microsoft | .NET 8.0 runtime | affected |
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| Microsoft | .NET 9.0 runtime | affected |
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| Microsoft | ASP.NET Core 10.0 | affected |
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| Microsoft | ASP.NET Core 8.0 | affected |
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| Microsoft | ASP.NET Core 9.0 | affected |
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| Microsoft | Microsoft Visual Studio 2026 version 18.6 | affected |
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Configuration 1 [-]
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Configuration 2 [-]
| AND |
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| Package | CPE | Advisory | Released Date |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | |||
| dotnet8.0-0:8.0.128-1.el10_2 | cpe:/o:redhat:enterprise_linux:10.2 | RHSA-2026:25111 | 2026-06-10T00:00:00Z |
| dotnet9.0-0:9.0.118-1.el10_2 | cpe:/o:redhat:enterprise_linux:10.2 | RHSA-2026:25112 | 2026-06-10T00:00:00Z |
| Red Hat Enterprise Linux 8 | |||
| dotnet8.0-0:8.0.128-1.el8_10 | cpe:/a:redhat:enterprise_linux:8 | RHSA-2026:25110 | 2026-06-10T00:00:00Z |
| dotnet9.0-0:9.0.118-1.el8_10 | cpe:/a:redhat:enterprise_linux:8 | RHSA-2026:25113 | 2026-06-10T00:00:00Z |
| dotnet10.0-0:10.0.109-1.el8_10 | cpe:/a:redhat:enterprise_linux:8 | RHSA-2026:25114 | 2026-06-10T00:00:00Z |
| Red Hat Hardened Images | |||
| dotnet9-0-main-9.0.117-1.hum1 | cpe:/a:redhat:hummingbird:1 | RHSA-2026:17527 | 2026-05-14T00:00:00Z |
| Vendor | Product | Versions | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | .net |
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| Microsoft | Asp.net Core |
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| Microsoft | Visual Studio 2026 |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-f8h2-vmm9-qhj6 | Microsoft Security Advisory CVE-2026-45591 – ASP.NET Core Denial of Service Vulnerability |
Ubuntu USN |
USN-8420-1 | .NET vulnerabilities |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: 2.5% (2.481% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat hummingbird |
|
| Weaknesses | CWE-770 | |
| CPEs | cpe:/a:redhat:enterprise_linux:8 cpe:/a:redhat:hummingbird:1 cpe:/o:redhat:enterprise_linux:10.2 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat hummingbird |
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| References |
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| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network. | |
| Title | ASP.NET Core Denial of Service Vulnerability | |
| First Time appeared |
Microsoft
Microsoft .net Microsoft asp.net Core Microsoft visual Studio 2026 |
|
| Weaknesses | CWE-400 | |
| CPEs | cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:* |
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| Vendors & Products |
Microsoft
Microsoft .net Microsoft asp.net Core Microsoft visual Studio 2026 |
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| References |
| |
| Metrics |
cvssV3_1
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