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#2 The Hacker News general July 09, 2026 at 08:48 UTC

Microsoft Patches RoguePlanet Defender Flaw That Can Grant SYSTEM Privileges

By [email protected] (The Hacker News)

AI Summary

Microsoft patched CVE-2026-50656 (CVSS 7.8), a privilege escalation flaw in the Microsoft Malware Protection Engine (mpengine.dll) dubbed 'RoguePlanet,' nearly a month after researcher NightmareEclipse published a public PoC. The fix was delivered as an out-of-band Malware Protection Engine update rather than a standard Patch Tuesday release, and a secondary patch issue may allow attackers to fill a target's hard disk.

Read full article → https://thehackernews.com/2026/07/microsoft-patche…

Relevance score: 85.0/100

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