CVE intelligence

CVE-2026-45490

Vulnerability intelligence

Published Jun 9, 2026Sources checked Nov 12, 2026

7.8HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-45490 and is rated High severity with a CVSS score of 7.8. 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

Install KB5097148. Install KB5097149. Install KB5097150.

Vendor-listed releases

10.0.9
8.0.28
9.0.17

CISA KEVNot listedBased on the latest collected catalog

EPSS0.4%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-45490?

Improper authorization in .NET allows an authorized attacker to elevate privileges locally.

Source: NVD