[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fB9JnE3e2h8LUAOX9lllozquOVvbJF-H-xLKonGtnKYI":3},{"article":4,"iocs":43,"watch_terms":44,"solutions":45,"lesson":137},{"id":5,"title":6,"slug":7,"summary":8,"ai_summary":9,"brief":10,"url":11,"image_url":12,"published_at":13,"ingested_at":14,"relevance_score":15,"entities":16,"category_id":26,"category":27,"article_tags":30},"219cf850-5c4f-42fa-9527-9659d6c1625a","New Microsoft Defender 'ShieldCrash' zero-day grants SYSTEM access","new-microsoft-defender-shieldcrash-zero-day-grants-system-access-aa6e93","An anonymous security researcher known as Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named \"ShieldCrash\" right after Microsoft rolled out its September 2026 Patch Tuesday security updates. [...]","A new Microsoft Defender zero-day exploit, dubbed 'ShieldCrash,' has been publicly released by an anonymous researcher named Nightmare Eclipse. This exploit grants SYSTEM-level access and was disclosed shortly after Microsoft's September 2026 Patch Tuesday updates, suggesting it may bypass some of those patches.","Microsoft Defender zero-day 'ShieldCrash' grants SYSTEM access post-September 2026 updates.","https:\u002F\u002Fwww.bleepingcomputer.com\u002Fnews\u002Fsecurity\u002Fnew-microsoft-defender-shieldcrash-zero-day-grants-system-access\u002F",null,"2026-09-09T07:30:15+00:00","2026-09-09T08:00:27.451041+00:00",9,[17,20,23],{"name":18,"type":19},"Microsoft Defender","product",{"name":21,"type":22},"Microsoft","vendor",{"name":24,"type":25},"Nightmare Eclipse","threat_actor","574f766a-fb3f-487c-8d2c-0720ae75471b",{"id":26,"icon":12,"name":28,"slug":29},"Zero-day","zero-day",[31,33,38],{"category":32},{"id":26,"icon":12,"name":28,"slug":29},{"category":34},{"id":35,"icon":12,"name":36,"slug":37},"80544778-fabb-4dcd-aa35-17492e5dcf4f","Vulnerabilities","vulnerabilities",{"category":39},{"id":40,"icon":12,"name":41,"slug":42},"89f78b1c-3503-45a1-9fc7-e23d2ce1c6d5","Malware","malware",[],[21,18],{"controls":46,"vendors":133},[47,76,104],{"slug":48,"name":49,"problem":50,"products":51},"vulnerability-management","Vulnerability scanning and prioritisation","You know which systems are vulnerable, and which ones to fix first.",[52,60,68],{"vendor_slug":53,"vendor_name":54,"vendor_logo":55,"product_slug":56,"product_name":57,"url":58,"description":59},"rapid7","Rapid7","\u002Fvendor-logos\u002Frapid7.png","insightvm","Rapid7 Exposure Command (InsightVM)","https:\u002F\u002Fwww.rapid7.com\u002Fproducts\u002Finsightvm\u002F","Vulnerability scanning and risk-based prioritisation; InsightVM is now part of Exposure Command, alongside attack surface and cloud risk.",{"vendor_slug":61,"vendor_name":62,"vendor_logo":63,"product_slug":64,"product_name":65,"url":66,"description":67},"holm-security","Holm Security","\u002Fvendor-logos\u002Fholm-security.png","holm-security-platform","Holm Security Platform","https:\u002F\u002Fwww.holmsecurity.com\u002F","Vulnerability scanning of systems, web applications, cloud and the external attack surface, plus phishing simulation.",{"vendor_slug":69,"vendor_name":70,"vendor_logo":71,"product_slug":72,"product_name":73,"url":74,"description":75},"qualys","Qualys","\u002Fvendor-logos\u002Fqualys.png","vmdr","Qualys VMDR","https:\u002F\u002Fwww.qualys.com\u002Fapps\u002Fvulnerability-management-detection-response\u002F","Vulnerability management, detection and response with risk-based prioritisation.",{"slug":77,"name":78,"problem":79,"products":80},"patch-management","Automated patch management","Known holes get closed in days, not months.",[81,89,97],{"vendor_slug":82,"vendor_name":83,"vendor_logo":84,"product_slug":85,"product_name":86,"url":87,"description":88},"ivanti","Ivanti","\u002Fvendor-logos\u002Fivanti.png","neurons-patch-management","Ivanti Neurons for Patch Management","https:\u002F\u002Fwww.ivanti.com\u002Fproducts\u002Fivanti-neurons-for-patch-management","Risk-based patch management for operating systems and third-party applications.",{"vendor_slug":90,"vendor_name":91,"vendor_logo":92,"product_slug":93,"product_name":94,"url":95,"description":96},"ninjaone","NinjaOne","\u002Fvendor-logos\u002Fninjaone.png","ninjaone-patch-management","NinjaOne Patch Management","https:\u002F\u002Fwww.ninjaone.com\u002Fpatch-management\u002F","Automated patching of operating systems and third-party applications from the cloud.",{"vendor_slug":98,"vendor_name":21,"vendor_logo":99,"product_slug":100,"product_name":101,"url":102,"description":103},"microsoft","\u002Fvendor-logos\u002Fmicrosoft.png","intune","Microsoft Intune","https:\u002F\u002Fwww.microsoft.com\u002Fen-us\u002Fsecurity\u002Fbusiness\u002Fmicrosoft-intune","Device management for Windows, macOS, iOS and Android, including update rings and compliance policies.",{"slug":105,"name":106,"problem":107,"products":108},"endpoint-detection-response","Endpoint detection and response (EDR and XDR)","Malware and hands-on-keyboard attackers on laptops and servers get spotted and stopped.",[109,117,125],{"vendor_slug":110,"vendor_name":111,"vendor_logo":112,"product_slug":113,"product_name":114,"url":115,"description":116},"eset","ESET","\u002Fvendor-logos\u002Feset.png","eset-protect","ESET PROTECT","https:\u002F\u002Fwww.eset.com\u002Fint\u002Fbusiness\u002Fsolutions\u002Fendpoint-protection\u002F","Endpoint protection platform with detection and response add-ons.",{"vendor_slug":118,"vendor_name":119,"vendor_logo":120,"product_slug":121,"product_name":122,"url":123,"description":124},"withsecure","WithSecure","\u002Fvendor-logos\u002Fwithsecure.png","elements-xdr","WithSecure Elements XDR","https:\u002F\u002Fwww.withsecure.com\u002Fen\u002Ffor-business\u002Fplatform\u002Fxdr\u002F","Endpoint detection and response with extended detection, on the Elements cloud platform.",{"vendor_slug":126,"vendor_name":127,"vendor_logo":128,"product_slug":129,"product_name":130,"url":131,"description":132},"crowdstrike","CrowdStrike","\u002Fvendor-logos\u002Fcrowdstrike.png","falcon-insight-xdr","Falcon Insight XDR","https:\u002F\u002Fwww.crowdstrike.com\u002Fen-us\u002Fplatform\u002Fendpoint-security\u002Ffalcon-insight-xdr\u002F","Endpoint detection and response with extended detection across other security tools.",[134],{"slug":98,"name":21,"logo_path":99,"roles":135},[136],"affected",{"slug":138,"title":139,"body":140,"framework_refs":141,"framework_notes":153},"shieldcrash-zero-day-bypasses-defender-patches-grants-system-access","ShieldCrash Zero-Day Bypasses Defender Patches, Grants SYSTEM Access","A publicly released zero-day exploit targeting Microsoft Defender demonstrates the critical danger of vulnerabilities in trusted security tooling itself — the very software designed to protect systems becomes the attack vector. The exploit grants SYSTEM-level privileges, meaning an attacker gains the highest level of access on a Windows machine, enabling full compromise. The fact that it was disclosed shortly after Patch Tuesday and may bypass those updates highlights the gap between vendor patch cycles and emerging threat timelines. Organizations cannot rely solely on scheduled patching cadences when zero-days are weaponized and publicly released within days of a patch cycle. This incident underscores that security products must be treated with the same — if not greater — scrutiny as any other enterprise software.",[142,143,144,145,146,147,148,149,150,151,152],"CIS Control 7 – Continuous Vulnerability Management","CIS Control 4 – Secure Configuration of Enterprise Assets","CIS Control 8 – Audit Log Management","NIST SP 800-40 Rev. 4 – Guide to Enterprise Patch Management","NIST AC-6 – Least Privilege","NIST SI-2 – Flaw Remediation","NIST IR-4 – Incident Handling","NIST RA-5 – Vulnerability Monitoring and Scanning","MITRE ATT&CK T1068 – Exploitation for Privilege Escalation","ISO\u002FIEC 27001:2022 – Control 8.8 (Management of Technical Vulnerabilities)","ITIL 4 – Emergency Change Management",{}]