🔐 CVE Alert

CVE-2026-45591

HIGH 7.5

ASP.NET Core Denial of Service Vulnerability

CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th

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

Vendor microsoft
Product .net 10.0
Ecosystems
Industries
TechnologyEnterprise
Published Jun 9, 2026
Last Updated Jul 15, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

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 / Microsoft Visual Studio 2026 version 18.6
18.6.0 < 18.6.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗
msrc.microsoft.com: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-45591 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2487224 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45591.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28007 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28009 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25115 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25111 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25112 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25114 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25110 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25113 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28227 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28011 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28051 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25222 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25220 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25221 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:26638 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:26994 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:17527