CVE intelligence

CVE-2026-50333

Vulnerability intelligence

Published Jul 14, 2026Sources checked Oct 28, 2026

7.8HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-50333 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: Aug 25, 2026

Vendor remediation details

Install KB5099538. Install KB5099540. Install KB5099539. Install KB5099536. Install KB5101650. Install KB5101649. Install KB5099535.

Vendor-listed releases

10.0.17763.9020
10.0.20348.5386
10.0.19044.7548
10.0.19045.7548
10.0.26100.33158
10.0.26200.8875
10.0.26100.8875
10.0.28000.2525
10.0.14393.9339

CISA KEVNot listedBased on the latest collected catalog

EPSS0.3%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-50333?

Missing authentication for critical function in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.

Source: NVD