CVE intelligence

CVE-2026-50420

Vulnerability intelligence

Published Jul 14, 2026Sources checked Nov 12, 2026

5.5MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-50420 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: Jul 14, 2026

Vendor remediation details

Install KB5099536. Install KB5101650. Install KB5101649.

Vendor-listed releases

10.0.26100.33158
10.0.26200.8875
10.0.26100.8875
10.0.28000.2525

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-2026-50420?

Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.

Source: NVD