Published Jul 14, 2026Sources checked Nov 12, 2026
5.5MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2026-50657 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
Release Notes
Vendor-listed releases
101.26042.0020
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-2026-50657?
Exposure of private personal information to an unauthorized actor in Microsoft Defender allows an authorized attacker to disclose information locally.