Microsoft Malware Protection Engine

Critical CVEs

Microsoft Patches RoguePlanet Defender Privilege Escalation Flaw (CVE-2026-50656)

Microsoft has released security updates to address a critical privilege escalation vulnerability in its Microsoft Malware Protection Engine, tracked as CVE-2026-50656 (CVSS…

Chaotic Eclipse CVE-2026-33825 CVE-2026-41091 CVE-2026-45498

July 9, 2026

Critical CVEs

Microsoft Confirms RoguePlanet Defender Zero-Day, Patch in Development

Microsoft has formally disclosed a zero-day vulnerability in Microsoft Defender, codenamed RoguePlanet, and confirmed that a patch is in development. The flaw,…

Chaotic Eclipse CVE-2026-11645 CVE-2026-33825 CVE-2026-41091

June 25, 2026

Cyber Products

Microsoft Malware Protection Engine (mpengine.dll)

Core scanning engine for Microsoft Defender and other antimalware products, affected by the RoguePlanet vulnerability.

antivirus Microsoft Defender Microsoft Malware Protection Engine mpengine.dll

June 25, 2026