CVE-2026-455917.5HighCWE-400

CVE-2026-45591: ASP.NET Core Denial of Service Vulnerability

Microsoft · .NET 10.0 runtime

Vendor fix available · Affected: Microsoft .NET 10.0 runtime · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

2.5%probability of exploitation in the next 30 days

84th percentile

050100

Higher than 84% of scored CVEs

7.5HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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

Affected products7

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Microsoft · .NET 10.0 runtimefrom 10.0.0 before 10.0.9
Microsoft · .NET 8.0 runtimefrom 8.0.0 before 8.0.28
Microsoft · .NET 9.0 runtimefrom 9.0.0 before 9.0.17
Microsoft · ASP.NET Core 10.0from 10.0 before 10.0.9
Microsoft · ASP.NET Core 8.0from 8.0 before 8.0.28
Microsoft · ASP.NET Core 9.0from 9.0 before 9.0.17
Microsoft · Microsoft Visual Studio 2026 version 18.6from 18.6.0 before 18.6.3

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Uncontrolled Resource Consumption · Denial of Service
Vendor: Microsoft
Published: June 2026
Band: Possible (1 to 10%), June 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-45591 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References

9 more references are in the CVE record.