{"metadata": {"vulnerability": "CVE-2021-26891", "count": 24, "kinds": {"milestone": 6, "sighting": 7, "kev": 0, "other": 11}}, "data": [{"timestamp": "2021-02-08T00:00:00Z", "date_only": false, "value": "2021-02-08T00:00:00.000Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2021-26891", "field": "cveMetadata.dateReserved"}, {"timestamp": "2021-03-09T16:00:00Z", "date_only": false, "value": "2021-03-09T16:00:00.000Z", "kind": "other", "label": "Made public", "source": "cvelistv5 / microsoft", "record": "CVE-2021-26891", "field": "containers.cna.datePublic"}, {"timestamp": "2021-03-10T00:00:00Z", "date_only": false, "value": "2021-03-10T00:00:00", "kind": "other", "label": "Last revision date", "source": "certfr_avis \u00b7 CERTFR-2021-AVI-181", "record": "CERTFR-2021-AVI-181", "field": "last_revision_date"}, {"timestamp": "2021-03-10T00:00:00Z", "date_only": false, "value": "2021-03-10T00:00:00", "kind": "milestone", "label": "Published", "source": "certfr_avis \u00b7 CERTFR-2021-AVI-181", "record": "CERTFR-2021-AVI-181", "field": "initial_release_date"}, {"timestamp": "2021-03-10T00:00:00Z", "date_only": false, "value": "2021-03-10T00:00:00.000000", "kind": "other", "label": "Revision date", "source": "certfr_avis \u00b7 CERTFR-2021-AVI-181", "record": "CERTFR-2021-AVI-181", "field": "revisions.0.revision_date"}, {"timestamp": "2021-03-11T15:42:57Z", "date_only": false, "value": "2021-03-11T15:42:57.000Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2021-26891", "field": "cveMetadata.datePublished"}, {"timestamp": "2021-03-11T16:15:00Z", "date_only": false, "value": "2021-03-11T16:15:00Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-FRV5-PR8X-43H2", "record": "GHSA-FRV5-PR8X-43H2", "field": "database_specific.nvd_published_at"}, {"timestamp": "2021-03-11T16:15:16.003Z", "date_only": false, "value": "2021-03-11T16:15:16.003", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-26891", "record": "FKIE_CVE-2021-26891", "field": "published"}, {"timestamp": "2021-03-11T16:15:16.003Z", "date_only": false, "value": "2021-03-11T16:15:16.003", "kind": "milestone", "label": "Published", "source": "gsd \u00b7 GSD-2021-26891", "record": "GSD-2021-26891", "field": "namespaces.nvd.nist.gov.cve.published"}, {"timestamp": "2021-03-11T18:54:27Z", "date_only": false, "value": "2021-03-11T18:54:27.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/24760", "record": "CVE-2021-26891", "field": "creation_timestamp", "uuid": "b97f15c4-d67f-4344-834d-4c6428d5c3da", "content": "\u203c CVE-2021-26891 \u203c\n\nWindows Container Execution Agent Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-26865.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/24760"}, {"timestamp": "2021-03-24T11:01:11Z", "date_only": false, "value": "2021-03-24T11:01:11.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/CyberSecurityTechnologies/2974", "record": "CVE-2021-26891", "field": "creation_timestamp", "uuid": "a3eb6825-10d6-4734-bb47-27d4e1af9201", "content": "Windows Server Core 20H2 Containers Vulns.:\n1. Host Registry Virtual Registry Provider Bypass EoP in Windows Srv Core 20H2 (PoC for CVE-2021-26864)\nhttps://bugs.chromium.org/p/project-zero/issues/detail?id=2129\n2. AppSilo Object Manager Root Directory EoP\n(PoC for CVE-2021-26891)\nhttps://bugs.chromium.org/p/project-zero/issues/detail?id=2127", "url": "https://t.me/CyberSecurityTechnologies/2974"}, {"timestamp": "2021-04-02T11:01:09Z", "date_only": false, "value": "2021-04-02T11:01:09.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/CyberSecurityTechnologies/3038", "record": "CVE-2021-26891", "field": "creation_timestamp", "uuid": "9be8b3e6-bc26-4ec8-ab2a-4c31bb0cc088", "content": "#Research\nNew vulnerabilities in Windows Server Containers: CVE-2021-24096, CVE-2021-26891,\u00a0CVE-2021-26865, CVE-2021-26864\nhttps://googleprojectzero.blogspot.com/2021/04/who-contains-containers.html", "url": "https://t.me/CyberSecurityTechnologies/3038"}, {"timestamp": "2022-05-24T17:44:21Z", "date_only": false, "value": "2022-05-24T17:44:21Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-FRV5-PR8X-43H2", "record": "GHSA-FRV5-PR8X-43H2", "field": "published"}, {"timestamp": "2023-12-13T01:23:33.098Z", "date_only": false, "value": "2023-12-13T01:23:33.098592Z", "kind": "other", "label": "Updated", "source": "gsd \u00b7 GSD-2021-26891", "record": "GSD-2021-26891", "field": "gsd.osvSchema.modified"}, {"timestamp": "2023-12-29T20:15:56.027Z", "date_only": false, "value": "2023-12-29T20:15:56.027", "kind": "other", "label": "Updated", "source": "gsd \u00b7 GSD-2021-26891", "record": "GSD-2021-26891", "field": "namespaces.nvd.nist.gov.cve.lastModified"}, {"timestamp": "2024-08-03T20:33:41.324Z", "date_only": false, "value": "2024-08-03T20:33:41.324Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CVE", "record": "CVE-2021-26891", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2026-08-19T16:30:33.597Z", "date_only": false, "value": "2026-08-19T16:30:33.597Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2021-26891", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-08-19T16:30:33.597Z", "date_only": false, "value": "2026-08-19T16:30:33.597Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / microsoft", "record": "CVE-2021-26891", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-08-19T17:17:45.297Z", "date_only": false, "value": "2026-08-19T17:17:45.297", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-26891", "record": "FKIE_CVE-2021-26891", "field": "lastModified"}, {"timestamp": "2026-08-19T18:31:31Z", "date_only": false, "value": "2026-08-19T18:31:31Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-FRV5-PR8X-43H2", "record": "GHSA-FRV5-PR8X-43H2", "field": "modified"}, {"timestamp": "2026-09-01T17:00:55.741Z", "date_only": false, "value": "2026-09-01T17:00:55.741969Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cissp/2852", "record": "CVE-2021-26891", "field": "creation_timestamp", "uuid": "9afae248-0895-4634-a322-8e11eac82a62", "url": "https://t.me/cissp/2852"}, {"timestamp": "2026-09-01T17:00:57.525Z", "date_only": false, "value": "2026-09-01T17:00:57.525326Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cissp/2687", "record": "CVE-2021-26891", "field": "creation_timestamp", "uuid": "e127658f-b936-4b7d-86e9-429e3db35126", "url": "https://t.me/cissp/2687"}, {"timestamp": "2026-09-11T11:00:03.830Z", "date_only": false, "value": "2026-09-11T11:00:03.830429Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/cissp/2852", "record": "CVE-2021-26891", "field": "creation_timestamp", "uuid": "362d58e9-4d3c-463f-88c9-f0f78aeb3a90", "url": "https://t.me/cissp/2852"}, {"timestamp": "2026-09-11T14:00:05.455Z", "date_only": false, "value": "2026-09-11T14:00:05.455959Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/cissp/2687", "record": "CVE-2021-26891", "field": "creation_timestamp", "uuid": "7b59e7e9-0812-4282-bce1-19dc2cf3f302", "url": "https://t.me/cissp/2687"}]}