CVE intelligence

CVE-2026-105507

Vulnerability intelligence

Published Nov 10, 2026Sources checked Nov 10, 2026

7.8HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-105507 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: Nov 10, 2026

Vendor remediation details

Install KB5131085. Install KB5131090. Install KB5131096. Install KB5131080. Install KB5131077. Install KB5132061. Install KB5132043. Install KB5131087. Install KB5132059. Install KB5131291.

Vendor-listed releases

10.0.17763.9487
10.0.20348.5870
10.0.19044.7846
10.0.19045.7846
10.0.26100.33822
10.0.26100.33730
10.0.26200.9974
10.0.26200.9911
10.0.22631.7711
10.0.26100.9974
10.0.26100.9911
10.0.28000.3501
10.0.14393.9688
10.0.26300.9974
10.0.26300.9911

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-2026-105507?

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