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Vulnerability record · CVE-2026-45591 · published 9 June 2026

CVE-2026-45591: Microsoft asp.net core uncontrolled resource consumption vulnerability

Microsoft · Asp.Net Core

Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.

7.5 CVSS 3.1 High EPSS 2.4% · top 16.3% CWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
21References
23 Jul 2026Last modified by NVD

Description

Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

Track CVE-2026-45591 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2023-44487HTTP/2 Rapid Reset stream cancellation denial of serviceThe HTTP/2 protocol permits a client to cancel many streams quickly, and the server's handling of those resets consumes disproportionate resources. T…KEVEPSS 100%analysed7.5CVE-2023-38180Microsoft .NET and Visual Studio uncontrolled resource consumption DoSCVE-2023-38180 is a denial-of-service flaw in Microsoft .NET, ASP.NET Core and Visual Studio 2022, classified as uncontrolled resource consumption (C…KEVEPSS 14%analysed9.9CVE-2025-55315ASP.NET Core HTTP request smuggling bypasses security featuresASP.NET Core inconsistently interprets HTTP requests, enabling HTTP request/response smuggling (CWE-444). An attacker who already holds some authoriz…EPSS 66%analysed9.8CVE-2026-47304Microsoft .net framework insufficient verification of data authenticity vulnerabilityImproper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.EPSS 0.29%9.8CVE-2024-43498Microsoft .net type confusion vulnerability.NET and Visual Studio Remote Code Execution VulnerabilityEPSS 3.6%9.8CVE-2024-0057Microsoft powershell improper input validation vulnerabilityNET, .NET Framework, and Visual Studio Security Feature Bypass VulnerabilityEPSS 2.8%9.8CVE-2023-36049Microsoft .net framework improper input validation vulnerability.NET, .NET Framework, and Visual Studio Elevation of Privilege VulnerabilityEPSS 13%9.1CVE-2026-40372Microsoft asp.net core improper verification of cryptographic signature vulnerabilityImproper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.EPSS 0.82%

Source: NIST National Vulnerability Database (record CVE-2026-45591), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.