CVE intelligence

CVE-2026-27911

Vulnerability intelligence

Published Apr 14, 2026Sources checked Nov 11, 2026

7.8HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-27911 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: Apr 14, 2026

Vendor remediation details

Install KB5082123. Install KB5082142. Install KB5082200. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060. Install KB5082198. Install KB5083768.

Vendor-listed releases

10.0.17763.8644
10.0.20348.5020
10.0.19044.7184
10.0.19045.7184
10.0.26100.32690
10.0.26200.8246
10.0.22631.6936
10.0.25398.2274
10.0.26100.8246
10.0.14393.9060
10.0.28000.1836

CISA KEVNot listedBased on the latest collected catalog

EPSS0.2%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-27911?

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows User Interface Core allows an authorized attacker to elevate privileges locally.

Source: NVD