# RoguePlanet let hackers take over your PC. Microsoft just patched it

_Friday, July 10, 2026 at 8:00 AM EDT · Security · Latest · Tier 2 — Notable_

![RoguePlanet let hackers take over your PC. Microsoft just patched it — Primary](https://www.pcworld.com/wp-content/uploads/2026/07/Microsoft-Defender-Antivirus-on-Windows-11-dark-background.jpg?quality=50&strip=all&w=1024)

Microsoft patched RoguePlanet (CVE-2026-50656), a critical zero-day vulnerability in Windows Defender that allowed hackers complete system access. The fix was automatically delivered through Windows Update's Malware Protection Engine to protect users from potential attacks. Security researcher Nightmare Eclipse discovered this flaw along with other Windows vulnerabilities, emphasizing the importance of keeping systems updated. Microsoft released an update to the Microsoft Malware Protection Engine that addresses the vulnerability identified by CVE-2026-50656. Please see the FAQ for more information on how to check if the new version has been installed.

## Sources

- [PCWorld](https://www.pcworld.com/article/3188750/rogueplanet-let-hackers-take-over-your-pc-microsoft-just-patched-it.html)

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Canonical: https://techandbusiness.org/newswire/1zexheHxKDYI99qGZt2Y7B
Retrieved: 2026-07-10T16:40:22.220Z
Publisher: Tech & Business (techandbusiness.org)