CVE intelligence

CVE-2026-45491

Vulnerability intelligence

Published Jun 9, 2026Sources checked Nov 12, 2026

5.5MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-45491 and is rated Medium severity with a CVSS score of 5.5. 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

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-2026-45491?

Improper link resolution before file access ('link following') in .NET allows an unauthorized attacker to perform tampering locally.

Source: NVD