MEDIUMMalware
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Microsoft Patches RoguePlanet Defender Flaw That Can Grant SYSTEM Privileges

·Source: The Hacker News

Updated:

Executive Summary

Microsoft has released security updates for a Defender vulnerability known as RoguePlanet, nearly a month after details of the flaw became public. The vulnerability, tracked as CVE-2026-50656 (CVSS score: 7.8), is a privilege escalation issue in the Microsoft Malware Protection Engine ("mpengine.dll"), which provides scanning, detection, and cleaning capabilities for its antivirus and

Analysis

Microsoft has released security updates for a Defender vulnerability known as RoguePlanet, nearly a month after details of the flaw became public. The vulnerability, tracked as CVE-2026-50656 (CVSS score: 7.8), is a privilege escalation issue in the Microsoft Malware Protection Engine ("mpengine.dll"), which provides scanning, detection, and cleaning capabilities for its antivirus and

Indicators of Compromise (1)

CVE (1)
CVE-2026-50656
NVDMITRE CVE
Source Attribution

Originally published by The Hacker News on Jul 9, 2026.

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