CVE-2026-45591

HIGH

Microsoft ASP.NET Core - Unauthenticated Denial of Service

Title source: manual
STIX 2.1

Description

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

References (21)

Core 21
Core References
Vendor Advisory vendor-advisory patch
ASP.NET Core Denial of Service Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591

Scores

CVSS v3 7.5
EPSS 0.0243
EPSS Percentile 82.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-400 CWE-770
Status published
Products (22)
microsoft/.net 8.0.0 - 8.0.28
Microsoft/.NET 10.0 10.0.0 - 10.0.9
Microsoft/.NET 8.0 8.0.0 - 8.0.28
Microsoft/.NET 9.0 9.0.0 - 9.0.17
Microsoft/ASP.NET Core 10.0 10.0 - 10.0.9
Microsoft/ASP.NET Core 8.0 8.0 - 8.0.28
Microsoft/ASP.NET Core 9.0 9.0 - 9.0.17
microsoft/asp.net_core 8.0.0 - 8.0.28
Microsoft/Microsoft Visual Studio 2026 version 18.6 18.6.0 - 18.6.3
microsoft/visual_studio_2026 18.6.0 - 18.6.3
... and 12 more
Published Jun 09, 2026
Tracked Since Jun 09, 2026