CVE intelligence

CVE-2026-105545

Vulnerability intelligence

Published Nov 10, 2026Sources checked Nov 10, 2026

7.0HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-105545 and is rated High severity with a CVSS score of 7.0. 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: Nov 10, 2026

Vendor remediation details

Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.

Vendor-listed releases

6.2.9200.26434
6.3.9600.23470
10.0.14393.9612
10.0.17763.9376
10.0.19044.7807
10.0.19045.7807
10.0.20348.5761
10.0.22631.7652
10.0.26100.9711
10.0.26200.9711
10.0.26300.9711
10.0.26100.33650
10.0.28000.3231

CISA KEVNot listedBased on the latest collected catalog

EPSSUnavailableNo current score collected

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-105545?

An elevation of privilege vulnerability exists in the Windows Installer when the Windows Installer fails to properly sanitize input leading to an insecure library loading behavior. A locally authenticated attacker could run arbitrary code with elevated system privileges.

An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting the input sanitization error to preclude unintended elevation.

Source: NVD