{"metadata": {"vulnerability": "ubuntu-cve-2021-28421", "count": 8, "kinds": {"milestone": 3, "sighting": 0, "kev": 0, "other": 5}}, "data": [{"timestamp": "2021-03-15T00:00:00Z", "date_only": false, "value": "2021-03-15T00:00:00.000Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5 \u00b7 CVE-2021-28421", "record": "CVE-2021-28421", "field": "cveMetadata.dateReserved"}, {"timestamp": "2021-04-13T13:44:57Z", "date_only": false, "value": "2021-04-13T13:44:57.000Z", "kind": "milestone", "label": "Published", "source": "cvelistv5 \u00b7 CVE-2021-28421", "record": "CVE-2021-28421", "field": "cveMetadata.datePublished"}, {"timestamp": "2021-04-13T14:15:00Z", "date_only": false, "value": "2021-04-13T14:15:00Z", "kind": "milestone", "label": "Published", "source": "osv_ubuntu", "record": "ubuntu-cve-2021-28421", "field": "published"}, {"timestamp": "2021-07-13T15:11:43Z", "date_only": false, "value": "2021-07-13T15:11:43.000Z", "kind": "other", "label": "Rejected", "source": "cvelistv5 \u00b7 CVE-2021-28421", "record": "CVE-2021-28421", "field": "cveMetadata.dateRejected"}, {"timestamp": "2021-07-13T15:11:43Z", "date_only": false, "value": "2021-07-13T15:11:43.000Z", "kind": "other", "label": "Updated", "source": "cvelistv5 \u00b7 CVE-2021-28421", "record": "CVE-2021-28421", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2021-07-13T15:11:43Z", "date_only": false, "value": "2021-07-13T15:11:43.000Z", "kind": "other", "label": "Updated", "source": "cvelistv5 \u00b7 CVE-2021-28421 / mitre", "record": "CVE-2021-28421", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2025-08-01T04:53:07Z", "date_only": false, "value": "2025-08-01T04:53:07Z", "kind": "other", "label": "Updated", "source": "osv_ubuntu", "record": "ubuntu-cve-2021-28421", "field": "modified"}, {"timestamp": "2025-08-01T19:37:52Z", "date_only": false, "value": "2025-08-01T19:37:52Z", "kind": "other", "label": "Withdrawn", "source": "osv_ubuntu", "record": "ubuntu-cve-2021-28421", "field": "withdrawn"}]}