{"metadata": {"vulnerability": "CVE-2026-85884", "count": 21, "kinds": {"milestone": 6, "sighting": 4, "kev": 0, "other": 11}}, "data": [{"timestamp": "2026-09-04T18:18:19.327Z", "date_only": false, "value": "2026-09-04T18:18:19.327Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-85884", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-13T00:00:00Z", "date_only": true, "value": "2026-10-13", "kind": "milestone", "label": "Published", "source": "certfr_avis \u00b7 CERTFR-2026-AVI-1314", "record": "CERTFR-2026-AVI-1314", "field": "vendor_advisories.0.published_at"}, {"timestamp": "2026-10-13T14:00:00Z", "date_only": false, "value": "2026-10-13T14:00:00.000Z", "kind": "other", "label": "Made public", "source": "cvelistv5 / microsoft", "record": "CVE-2026-85884", "field": "containers.cna.datePublic"}, {"timestamp": "2026-10-13T19:01:04.035Z", "date_only": false, "value": "2026-10-13T19:01:04.035Z", "kind": "milestone", "label": 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"CERTFR-2026-AVI-1314", "field": "initial_release_date"}, {"timestamp": "2026-10-14T00:00:00Z", "date_only": false, "value": "2026-10-14T00:00:00.000000", "kind": "other", "label": "Revision date", "source": "certfr_avis \u00b7 CERTFR-2026-AVI-1314", "record": "CERTFR-2026-AVI-1314", "field": "revisions.0.revision_date"}, {"timestamp": "2026-10-14T01:49:33Z", "date_only": false, "value": "2026-10-14T01:49:33.000000Z", "kind": "sighting", "label": "Seen", "source": "https://www.acn.gov.it/portale/w/aggiornamenti-mensili-microsoft-25", "record": "CVE-2026-85884", "field": "creation_timestamp", "uuid": "0d20431f-ca68-4ae1-88e7-8669d98e558c", "url": "https://www.acn.gov.it/portale/w/aggiornamenti-mensili-microsoft-25"}, {"timestamp": "2026-10-14T07:51:15.463Z", "date_only": false, "value": "2026-10-14T07:51:15.463986Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117438170712964099", "record": "CVE-2026-85884", "field": "creation_timestamp", "uuid": "8d102097-5a73-4755-803f-564345238da2", "content": "CVE-2026-85884 Windows Health and Optimized Experiences Service Elevation of Privilege Vulnerability Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.\nhttps://www.cve.org/CVERecord?id=CVE-2026-85884https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85884#Microsoft #Windows11Version24H2 #Windows11Version25H2 #Windows11version26H1 #Windows11Version26H2#CVE_2026_85884#bot", "url": "https://infosec.exchange/users/cve/statuses/117438170712964099"}, {"timestamp": "2026-10-14T17:01:46.886Z", "date_only": false, "value": "2026-10-14T17:01:46.886926Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/DarkWebInformer/statuses/117440335238177200", "record": "CVE-2026-85884", "field": "creation_timestamp", "uuid": "8bca2a3d-1c36-4b0a-95b5-fe173f6156e5", "content": "\ud83d\udea8 PoC published for a Windows privilege escalation vulnerability involving the Windows Health and Optimized Experiences service; CVE-2026-85884\nPoC: https://github.com/Beardhammer/CVE-2026-85884\nThe issue allows low-privileged code with access to the Windows diagnostics workflow to trigger a trusted ETW event containing an attacker-controlled Lua module path. The LocalSystem whesvc service can then execute that module through WinDiag without properly validating the producer or restricting the module location.\nAffected: Windows 11 x64 builds including 26200.8457 and 29617.1000Impact: Local privilege escalation to SYSTEM\nThe PoC demonstrates the full chain from a standard non-administrator PowerShell session to execution as NT AUTHORITY\\SYSTEM.", "url": "https://infosec.exchange/users/DarkWebInformer/statuses/117440335238177200"}, {"timestamp": "2026-10-21T21:00:33.239Z", "date_only": false, "value": "2026-10-21T21:00:33.239Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2026-85884", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-10-21T21:00:33.239Z", "date_only": false, "value": "2026-10-21T21:00:33.239Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / microsoft", "record": "CVE-2026-85884", "field": "containers.cna.providerMetadata.dateUpdated"}]}