{"vulnerability": "cve-2026-53021", "sightings": [{"uuid": "9e88f65a-35cf-4e3f-9c8b-1e4b2cd8b89d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2026-53021", "type": "seen", "source": "https://www.hkcert.org/security-bulletin/debian-linux-kernel-multiple-vulnerabilities_20260706", "content": "", "creation_timestamp": "2026-07-06T06:46:49.518107Z"}, {"uuid": "ba438848-6ada-4682-8a0d-6db5a0ad8861", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2026-53021", "type": "seen", "source": "https://bsky.app/profile/malwareobserver.bsky.social/post/3mqoxtqh5xf23", "content": "", "creation_timestamp": "2026-07-15T14:50:56.842497Z"}, {"uuid": "b8d02035-152f-41d1-99d7-7435a9385f01", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2026-53021", "type": "seen", "source": "https://www.hkcert.org/security-bulletin/ubuntu-linux-kernel-multiple-vulnerabilities_20260803", "content": "", "creation_timestamp": "2026-08-03T08:58:32.813705Z"}]}