CVE-2023-36038: ASP.NET Core Denial of Service Vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-11-14 · updated 2026-06-17
Weakness: CWE-400

Description

ASP.NET Core Denial of Service Vulnerability

Affected products

Microsoft .NET Core: 8.0.0
Microsoft Visual Studio 2022 version 17.14: from 17.2 before 17.2.22; from 17.4 before 17.4.14; from 17.6 before 17.6.10; from 17.7 before 17.7.7 — fixed in 17.2.22, 17.4.14, 17.6.10, 17.7.7
Microsoft .NET 8.0: from 8.0 before 8.0.0 — fixed in 8.0.0
Microsoft ASP.NET Core 8.0: from 8.0 before 8.0.0 — fixed in 8.0.0
Microsoft Visual Studio 2022 version 17.2: from 17.2.0 before 17.2.22 — fixed in 17.2.22
Microsoft Visual Studio 2022 version 17.4: from 17.4.0 before 17.4.14 — fixed in 17.4.14
Microsoft Visual Studio 2022 version 17.6: from 17.6.0 before 17.6.10 — fixed in 17.6.10
Microsoft Visual Studio 2022 version 17.14: from 17.7.0 before 17.7.7 — fixed in 17.7.7

How to fix

Upgrade to a fixed version: Microsoft Visual Studio 2022 version 17.14 17.2.22, 17.4.14, 17.6.10, 17.7.7; Microsoft .NET 8.0 8.0.0; Microsoft ASP.NET Core 8.0 8.0.0; Microsoft Visual Studio 2022 version 17.2 17.2.22; Microsoft Visual Studio 2022 version 17.4 17.4.14; Microsoft Visual Studio 2022 version 17.6 17.6.10; Microsoft Visual Studio 2022 version 17.14 17.7.7. Check the vendor advisory for mitigations.

References

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