CVE intelligence

CVE-2026-45591

Vulnerability intelligence

Published Jun 9, 2026Sources checked Nov 12, 2026

7.5HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-45591 and is rated High severity with a CVSS score of 7.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Jun 9, 2026

Vendor remediation details

Release Notes Install KB5097148. Install KB5097149. Install KB5097150.

Vendor-listed releases

18.6.3
10.0.9
8.0.28
9.0.17

CISA KEVNot listedBased on the latest collected catalog

EPSS2.5%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-45591?

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

Source: NVD