CVE-2026-70186
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ASP.NET Core Denial of Service via Deadlock
Vulnerability report for CVE-2026-70186, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-13
Last updated on: 2026-10-13
Assigner: Microsoft Corporation
Description
Description
Deadlock in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Microsoft | ASP.NET | Core 10.0 10.0 |
| Microsoft | ASP.NET | Core 8.0 8.0 |
| Microsoft | ASP.NET | Core 9.0 9.0 |
| Microsoft | Microsoft | Visual Studio 2022 version 17.14 17.14.0 |
| Microsoft | Microsoft | Visual Studio 2026 version 18.10 18.10.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-833 | The product contains multiple threads or executable segments that are waiting for each other to release a necessary lock, resulting in deadlock. |
