[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"branding":3,"analytics":7,"article-windows-defender-patch-trades-one-bug-for-a-disk-filling-risk":10,"sections":34},{"siteName":4,"siteTagline":5,"publisherName":4,"contactEmail":6},"The Revision","Tech news, decoded.","editor@therevision.news",{"gaMeasurementId":8,"adsenseClientId":9},"G-ZW2MV82GYR","ca-pub-8533917693782264",{"article":11},{"id":12,"slug":13,"title":14,"dek":15,"body_md":16,"tags_json":17,"published_at":18,"created_at":19,"updated_at":20,"status":21,"review_note":22,"review_notes":23,"image_url":22,"persona_id":22,"persona_name":22,"section":24,"tags":25,"sources":29,"feedback":33,"feedback_at":22,"cost_usd":33,"total_tokens":33},4546,"windows-defender-patch-trades-one-bug-for-a-disk-filling-risk","Windows Defender Patch Trades One Bug for a Disk-Filling Risk","Microsoft's fix for a remote-code-execution zero-day in its Malware Protection Engine may cause Windows machines to consume all available disk space.","Microsoft shipped a patch for a serious Windows Defender flaw — and the cure may carry its own problems.\n\nThe vulnerability, CVE-2026-50656 (dubbed RoguePlanet), lets remote attackers gain administrative control of Windows 10 and Windows 11 machines even with real-time protection turned off. It was disclosed publicly in June by a pseudonymous researcher called NightmareEclipse, who also released exploit code. Microsoft addressed it Wednesday through an automatic update to the Microsoft Malware Protection Engine — no user action required. The same update bundles what Microsoft describes as \"defense-in-depth updates to help improve security-related features,\" which is the kind of phrase that tends to precede a separate advisory a few weeks later.\n\nThe catch: NightmareEclipse says the patch itself may cause Windows machines to write files large enough to fill the hard disk entirely. A fix that bricks storage is not a solved problem — it is a tradeoff, and users currently have no manual override since the update deploys automatically. That framing matters because a full disk can take down services, corrupt data, and deny access just as effectively as the original exploit.\n\nNightmareEclipse has published several zero-days against Microsoft products over recent months, putting the company in a reactive posture. A researcher who has already forced multiple emergency patches is not someone whose post-patch warnings should be dismissed as noise.","[\"security\",\"windows\",\"vulnerability\",\"microsoft\"]","2026-07-09T20:52:55.000Z","2026-07-09T21:29:27.625Z","2026-07-09T21:29:30.566Z","published",null,[],"security",[24,26,27,28],"windows","vulnerability","microsoft",[30],{"name":31,"url":32},"Ars Technica","https:\u002F\u002Farstechnica.com\u002Fsecurity\u002F2026\u002F07\u002Fpatch-for-windows-defender-0-day-could-allow-attackers-to-fill-hard-disk\u002F",0,{"sections":35},[36,41,45,50,55,60,65,70,75,80,85,89,94,99],{"name":37,"slug":38,"count":39,"latest_published_at":40},"AI","ai",2590,"2026-07-16T04:00:00.000Z",{"name":42,"slug":24,"count":43,"latest_published_at":44},"Security",294,"2026-07-15T19:59:48.000Z",{"name":46,"slug":47,"count":48,"latest_published_at":49},"Deals","deals",179,"2026-06-29T20:02:07.000Z",{"name":51,"slug":52,"count":53,"latest_published_at":54},"Policy","policy",158,"2026-07-16T00:02:48.000Z",{"name":56,"slug":57,"count":58,"latest_published_at":59},"Hardware","hardware",122,"2026-07-14T19:46:26.000Z",{"name":61,"slug":62,"count":63,"latest_published_at":64},"Consumer Tech","consumer-tech",93,"2026-07-13T13:20:48.000Z",{"name":66,"slug":67,"count":68,"latest_published_at":69},"Software","software",70,"2026-07-13T19:52:25.000Z",{"name":71,"slug":72,"count":73,"latest_published_at":74},"Science","science",66,"2026-07-10T10:29:37.000Z",{"name":76,"slug":77,"count":78,"latest_published_at":79},"Dev Tools","dev-tools",59,"2026-07-07T04:00:00.000Z",{"name":81,"slug":82,"count":83,"latest_published_at":84},"Gaming","gaming",41,"2026-07-09T04:00:00.000Z",{"name":86,"slug":87,"count":83,"latest_published_at":88},"Startups","startups","2026-06-29T20:55:50.000Z",{"name":90,"slug":91,"count":92,"latest_published_at":93},"General","general",29,"2026-07-10T22:28:58.000Z",{"name":95,"slug":96,"count":97,"latest_published_at":98},"Reviews","reviews",20,"2026-06-24T12:00:01.000Z",{"name":100,"slug":101,"count":102,"latest_published_at":103},"How-To","how-to",6,"2026-06-16T09:00:00.000Z"]