CVE-2026-50656 - Geek Feed

Microsoft patches RoguePlanet Defender zero-day vulnerability

July 11, 2026July 11, 2026 geekfeed0Tagged 0day, CVE-2026-50656, Elevation of Privileges, microsoft, Microsoft Defender, Nightmare Eclipse, Privilege Escalation, RoguePlanet, vulnerability, Zero-Day

Microsoft has released a security patch to address a Defender zero-day vulnerability known as “RoguePlanet,” disclosed after the June 2026 Patch Tuesday. The flaw (tracked as CVE-2026-50656) was disclosed by a security researcher using the “Nightmare Eclipse” handle as part of an ongoing dispute with Microsoft over the company’s bug bounty and vulnerability disclosure practices. They […]

2 mins read

Microsoft working on Defender patch for RoguePlanet zero-day

June 20, 2026June 20, 2026 geekfeed0Tagged 0day, CVE-2026-50656, Elevation of Privileges, microsoft, Microsoft Defender, Nightmare Eclipse, Privilege Escalation, RoguePlanet, Zero-Day

Microsoft confirmed that it’s working on a security patch for a Defender zero-day vulnerability named “RoguePlanet,” disclosed one week ago. The security researcher who published a RoguePlanet exploit during the June 2026 Patch Tuesday (known as Nightmare Eclipse) said it affects fully patched Windows 10 and Windows 11 devices and allows attackers to spawn command prompts with […]

2 mins read