{"metadata": {"vulnerability": "cve-2021-21017", "count": 54, "kinds": {"milestone": 5, "sighting": 14, "kev": 11, "other": 24}}, "data": [{"timestamp": "2020-12-18T00:00:00Z", "date_only": false, "value": "2020-12-18T00:00:00.000Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "cve-2021-21017", "field": "cveMetadata.dateReserved"}, {"timestamp": "2021-02-09T00:00:00Z", "date_only": false, "value": "2021-02-09T00:00:00.000Z", "kind": "other", "label": "Made public", "source": "cvelistv5 / adobe", "record": "cve-2021-21017", "field": "containers.cna.datePublic"}, {"timestamp": "2021-02-09T23:00:00Z", "date_only": false, "value": "2021-02-09T23:00:00.000Z", "kind": "other", "label": "DATE PUBLIC", "source": "cvelistv5 / adobe", "record": "cve-2021-21017", "field": "containers.cna.x_legacyV4Record.CVE_data_meta.DATE_PUBLIC"}, {"timestamp": "2021-02-09T23:00:00Z", "date_only": false, "value": "2021-02-09T23:00:00.000Z", "kind": "other", "label": "DATE PUBLIC", "source": "gsd \u00b7 GSD-2021-21017", "record": "GSD-2021-21017", "field": "namespaces.cve.org.CVE_data_meta.DATE_PUBLIC"}, {"timestamp": "2021-02-10T00:00:00Z", "date_only": false, "value": "2021-02-10T00:00:00", "kind": "milestone", "label": "Published", "source": "certfr_avis \u00b7 CERTFR-2021-AVI-102", "record": "CERTFR-2021-AVI-102", "field": "initial_release_date"}, {"timestamp": "2021-02-10T00:00:00Z", "date_only": false, "value": "2021-02-10T00:00:00.000000", "kind": "other", "label": "Revision date", "source": "certfr_avis \u00b7 CERTFR-2021-AVI-102", "record": "CERTFR-2021-AVI-102", "field": "revisions.0.revision_date"}, {"timestamp": "2021-02-10T00:00:00Z", "date_only": true, "value": "2021-02-10", "kind": "other", "label": "Submit Time", "source": "cnvd \u00b7 CNVD-2021-11296", "record": "CNVD-2021-11296", "field": "submitTime"}, {"timestamp": "2021-02-10T04:00:00Z", "date_only": false, "value": "2021-02-10T04:00:00.000000Z", "kind": "sighting", "label": "Seen", "source": "https://www.govcert.gov.hk/en/alerts_detail.php?id=551", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "d6234013-140b-483e-b54f-1aea0a1e762d", "url": "https://www.govcert.gov.hk/en/alerts_detail.php?id=551"}, {"timestamp": "2021-02-11T19:42:20Z", "date_only": false, "value": "2021-02-11T19:42:20.000Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / adobe", "record": "cve-2021-21017", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2021-02-11T19:42:20.225Z", "date_only": false, "value": "2021-02-11T19:42:20.225Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "cve-2021-21017", "field": "cveMetadata.datePublished"}, {"timestamp": "2021-02-11T20:15:00Z", "date_only": false, "value": "2021-02-11T20:15:00Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-R8Q2-5JR4-57F7", "record": "GHSA-R8Q2-5JR4-57F7", "field": "database_specific.nvd_published_at"}, {"timestamp": "2021-02-11T20:15:00Z", "date_only": false, "value": "2021-02-11T20:15Z", "kind": "other", "label": "Published Date", "source": "gsd \u00b7 GSD-2021-21017", "record": "GSD-2021-21017", "field": "namespaces.nvd.nist.gov.publishedDate"}, {"timestamp": "2021-02-11T20:15:13.997Z", "date_only": false, "value": "2021-02-11T20:15:13.997", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-21017", "record": "FKIE_CVE-2021-21017", "field": "published"}, {"timestamp": "2021-02-11T22:48:01Z", "date_only": false, "value": "2021-02-11T22:48:01.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/23482", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "6dbda5d2-5dee-4e33-8e5d-f8727ac2906c", "content": "\u203c CVE-2021-21017 \u203c\n\nAcrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a heap-based buffer overflow vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/23482"}, {"timestamp": "2021-02-15T11:00:19Z", "date_only": false, "value": "2021-02-15T11:00:19.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/CyberSecurityTechnologies/2708", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "9190c694-21f8-4bea-8e7a-ed80e1c9067a", "content": "#Analytics\n10 most exploited vulnerabilities of the week (feb 8-14)\nCVE-2020-1472 - Microsoft Zerologon\nhttps://t.me/cybersecuritytechnologies/1742\nCVE-2021-3156 - Heap-Based Buffer Overflow in Sudo\nhttps://t.me/cybersecuritytechnologies/2577\nCVE-2021-1732 - Windows kernel 0-day exploit is used by BITTER APT in targeted attack\nhttps://t.me/cybersecuritytechnologies/2679\nCVE-2020-2037 - Palo Alto PAN-OS vulnerability\nhttps://t.me/cybersecuritytechnologies/2687\nCVE-2021-24074, CVE-2021-24086, CVE-2021-24094 - Windows IPv4/IPv6 Stack RCE/DoS Vulnerabilities\nhttps://unit42.paloaltonetworks.com/cve-2021-24074-patch-tuesday\nCVE-2021-1782 - iOS\\iPadOS 14.3 kernel LPE vulnerability\nhttps://t.me/cybersecuritytechnologies/2694\nCVE-2021-21017 - Acrobat Reader DC\u00a0a heap-based buffer overflow vulnerability\nhttps://threatpost.com/critical-adobe-windows-flaw/163789\nCVE-2020-24581 - D-Link DSL-2888A AU_2.31_V1x - RCE\nhttps://t.me/cybersecuritytechnologies/2670", "url": "https://t.me/CyberSecurityTechnologies/2708"}, {"timestamp": "2021-02-22T00:00:00Z", "date_only": true, "value": "2021-02-22", "kind": "other", "label": "Open Time", "source": "cnvd \u00b7 CNVD-2021-11296", "record": "CNVD-2021-11296", "field": "openTime"}, {"timestamp": "2021-03-19T00:00:00Z", "date_only": false, "value": "2021-03-19T00:00:00", "kind": "other", "label": "Last revision date", "source": "certfr_avis \u00b7 CERTFR-2021-AVI-102", "record": "CERTFR-2021-AVI-102", "field": "last_revision_date"}, {"timestamp": "2021-03-19T00:00:00Z", "date_only": false, "value": "2021-03-19T00:00:00.000000", "kind": "other", "label": "Revision date", "source": "certfr_avis \u00b7 CERTFR-2021-AVI-102", "record": "CERTFR-2021-AVI-102", "field": "revisions.1.revision_date"}, {"timestamp": "2021-11-03T00:00:00Z", "date_only": false, "value": "2021-11-03T00:00:00+00:00", "kind": "kev", "label": "Asserted", "source": "cisa-kev", "record": "CVE-2021-21017", "field": "timestamps.asserted_at", "uuid": "c5fbdf58-42ba-45b4-b0bb-fb119eec4779", "status": {"status_reason": "confirmed", "exploited": true}}, {"timestamp": "2021-11-03T00:00:00Z", "date_only": false, "value": "2021-11-03T00:00:00+00:00", "kind": "kev", "label": "Asserted", "source": "kevintel", "record": "CVE-2021-21017", "field": "timestamps.asserted_at", "uuid": "255defaf-ceb2-420d-8ebc-b7a4109a80bb", "status": {"status_reason": "confirmed", "exploited": true}}, {"timestamp": "2021-11-03T00:00:00Z", "date_only": true, "value": "2021-11-03", "kind": "other", "label": "Catalog added", "source": "cvelistv5 / CISA-ADP", "record": "cve-2021-21017", "field": "containers.adp.1.metrics.1.other.content.dateAdded"}, {"timestamp": "2021-11-03T00:00:00Z", "date_only": true, "value": "2021-11-03", "kind": "other", "label": "Catalog added", "source": "gsd \u00b7 GSD-2021-21017", "record": "GSD-2021-21017", "field": "namespaces.cisa.gov.dateAdded"}, {"timestamp": "2021-11-03T00:00:00Z", "date_only": false, "value": "2021-11-03T00:00:00.000Z", "kind": "kev", "label": "Catalog added", "source": "kevintel", "record": "CVE-2021-21017", "field": "evidence.0.details.added_date", "uuid": "255defaf-ceb2-420d-8ebc-b7a4109a80bb", "status": {"status_reason": "confirmed", "exploited": true}}, {"timestamp": "2021-11-03T00:00:00Z", "date_only": true, "value": "2021-11-03", "kind": "kev", "label": "Date added", "source": "cisa-kev", "record": "CVE-2021-21017", "field": "evidence.0.details.date_added", "uuid": "c5fbdf58-42ba-45b4-b0bb-fb119eec4779", "status": {"status_reason": "confirmed", "exploited": true}}, {"timestamp": "2021-11-03T00:00:00Z", "date_only": false, "value": "2021-11-03T00:00:00+00:00", "kind": "kev", "label": "First seen", "source": "cisa-kev", "record": "CVE-2021-21017", "field": "timestamps.first_seen_at", "uuid": "c5fbdf58-42ba-45b4-b0bb-fb119eec4779", "status": {"status_reason": "confirmed", "exploited": true}}, {"timestamp": "2021-11-03T00:00:00Z", "date_only": false, "value": "2021-11-03T00:00:00+00:00", "kind": "kev", "label": "First seen", "source": "kevintel", "record": "CVE-2021-21017", "field": "timestamps.first_seen_at", "uuid": "255defaf-ceb2-420d-8ebc-b7a4109a80bb", "status": {"status_reason": "confirmed", "exploited": true}}, {"timestamp": "2021-11-03T00:00:00Z", "date_only": false, "value": "2021-11-03T00:00:00+00:00", "kind": "kev", "label": "Status updated", "source": "cisa-kev", "record": "CVE-2021-21017", "field": "status.status_updated_at", "uuid": "c5fbdf58-42ba-45b4-b0bb-fb119eec4779", "status": {"status_reason": "confirmed", "exploited": true}}, {"timestamp": "2021-11-03T00:00:00Z", "date_only": false, "value": "2021-11-03T00:00:00+00:00", "kind": "kev", "label": "Status updated", "source": "kevintel", "record": "CVE-2021-21017", "field": "status.status_updated_at", "uuid": "255defaf-ceb2-420d-8ebc-b7a4109a80bb", "status": {"status_reason": "confirmed", "exploited": true}}, {"timestamp": "2021-11-03T00:00:00Z", "date_only": false, "value": "2021-11-03T00:00:00.000Z", "kind": "other", "label": "Time", "source": "cvelistv5 / CISA-ADP", "record": "cve-2021-21017", "field": "containers.adp.1.timeline.0.time"}, {"timestamp": "2021-11-08T08:58:16Z", "date_only": false, "value": "2021-11-08T08:58:16.000000Z", "kind": "sighting", "label": "Seen", "source": "MISP/f5030aca-7d5a-43a4-ae03-8f4ac8e85422", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "f6cbef07-30f5-4ea3-9519-23959f088c50"}, {"timestamp": "2021-11-17T00:00:00Z", "date_only": true, "value": "2021-11-17", "kind": "kev", "label": "Due date", "source": "cisa-kev", "record": "CVE-2021-21017", "field": "evidence.0.details.due_date", "uuid": "c5fbdf58-42ba-45b4-b0bb-fb119eec4779", "status": {"status_reason": "confirmed", "exploited": true}}, {"timestamp": "2021-11-17T00:00:00Z", "date_only": true, "value": "2021-11-17", "kind": "other", "label": "Remediation due", "source": "gsd \u00b7 GSD-2021-21017", "record": "GSD-2021-21017", "field": "namespaces.cisa.gov.dueDate"}, {"timestamp": "2021-11-20T09:53:52Z", "date_only": false, "value": "2021-11-20T09:53:52.000000Z", "kind": "sighting", "label": "Seen", "source": "MISP/3c19819c-1dac-4ef2-bfed-be5efa7e0123", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "fa0d4f0d-369d-4068-abad-08296045ab1e"}, {"timestamp": "2022-05-24T17:41:55Z", "date_only": false, "value": "2022-05-24T17:41:55Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-R8Q2-5JR4-57F7", "record": "GHSA-R8Q2-5JR4-57F7", "field": "published"}, {"timestamp": "2022-08-05T18:26:00Z", "date_only": false, "value": "2022-08-05T18:26Z", "kind": "other", "label": "Last Modified Date", "source": "gsd \u00b7 GSD-2021-21017", "record": "GSD-2021-21017", "field": "namespaces.nvd.nist.gov.lastModifiedDate"}, {"timestamp": "2023-12-05T07:55:14Z", "date_only": false, "value": "2023-12-05T07:55:14.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/arpsyndicate/1427", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "28581b1a-0194-45f6-9157-f3ee79911659", "content": "#ExploitObserverAlert\n\nCVE-2021-21017\n\nDESCRIPTION: Exploit Observer has 12 entries related to CVE-2021-21017. Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a heap-based buffer overflow vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.\n\nFIRST-EPSS: 0.632040000\nNVD-IS: 5.9\nNVD-ES: 2.8", "url": "https://t.me/arpsyndicate/1427"}, {"timestamp": "2023-12-13T01:23:10.426Z", "date_only": false, "value": "2023-12-13T01:23:10.426608Z", "kind": "other", "label": "Updated", "source": "gsd \u00b7 GSD-2021-21017", "record": "GSD-2021-21017", "field": "gsd.osvSchema.modified"}, {"timestamp": "2024-08-03T17:53:23.127Z", "date_only": false, "value": "2024-08-03T17:53:23.127Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CVE", "record": "cve-2021-21017", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2024-12-24T20:25:15.701Z", "date_only": false, "value": "2024-12-24T20:25:15.701435Z", "kind": "sighting", "label": "Seen", "source": "https://feedsin.space/feed/CISAKevBot/items/2971167", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "b70b84e5-1e80-4712-b47f-32812e7a8795", "url": "https://feedsin.space/feed/CISAKevBot/items/2971167"}, {"timestamp": "2025-02-04T21:28:57.359Z", "date_only": false, "value": "2025-02-04T21:28:57.359205Z", "kind": "other", "label": "Recorded", "source": "cvelistv5 / CISA-ADP", "record": "cve-2021-21017", "field": "containers.adp.1.metrics.0.other.content.timestamp"}, {"timestamp": "2025-02-04T21:28:57.359Z", "date_only": false, "value": "2025-02-04T21:28:57.359205Z", "kind": "other", "label": "Recorded", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-21017", "record": "FKIE_CVE-2021-21017", "field": "metrics.ssvcV203.0.ssvcData.timestamp"}, {"timestamp": "2025-02-23T02:09:51Z", "date_only": false, "value": "2025-02-23T02:09:51.000000Z", "kind": "sighting", "label": "Seen", "source": "MISP/3c19819c-1dac-4ef2-bfed-be5efa7e0123", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "4e5ea9d7-f17a-4807-a41c-2445017ce0a4"}, {"timestamp": "2025-10-21T23:35:28.186Z", "date_only": false, "value": "2025-10-21T23:35:28.186Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "cve-2021-21017", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2025-10-21T23:35:28.186Z", "date_only": false, "value": "2025-10-21T23:35:28.186Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CISA-ADP", "record": "cve-2021-21017", "field": "containers.adp.1.providerMetadata.dateUpdated"}, {"timestamp": "2025-10-22T00:32:02Z", "date_only": false, "value": "2025-10-22T00:32:02Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-R8Q2-5JR4-57F7", "record": "GHSA-R8Q2-5JR4-57F7", "field": "modified"}, {"timestamp": "2026-02-02T12:28:33.808Z", "date_only": false, "value": "2026-02-02T12:28:33.808213Z", "kind": "sighting", "label": "Exploited", "source": "https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/12a14c99-37f0-40c7-ad36-762578fcd01a", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "793c4764-3f91-434c-a33c-a0936e5a677d", "url": "https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/12a14c99-37f0-40c7-ad36-762578fcd01a"}, {"timestamp": "2026-02-02T12:28:33.808Z", "date_only": false, "value": "2026-02-02T12:28:33.808213Z", "kind": "sighting", "label": "Exploited", "source": "https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/12a14c99-37f0-40c7-ad36-762578fcd01a", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "baf4d5c7-c091-4cac-89cf-f7a458015d28", "url": "https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/12a14c99-37f0-40c7-ad36-762578fcd01a"}, {"timestamp": "2026-02-02T13:24:01Z", "date_only": false, "value": "2026-02-02T13:24:01+00:00", "kind": "kev", "label": "Recorded", "source": "cisa-kev", "record": "CVE-2021-21017", "field": "timestamps.recorded_at", "uuid": "c5fbdf58-42ba-45b4-b0bb-fb119eec4779", "status": {"status_reason": "confirmed", "exploited": true}}, {"timestamp": "2026-03-17T14:55:06.756Z", "date_only": false, "value": "2026-03-17T14:55:06.756845Z", "kind": "sighting", "label": "Seen", "source": "https://www.govcert.gov.hk/en/alerts_detail.php?id=551", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "703181a6-c682-4ebb-a2da-5dc97019848f", "url": "https://www.govcert.gov.hk/en/alerts_detail.php?id=551"}, {"timestamp": "2026-06-17T03:34:40.193Z", "date_only": false, "value": "2026-06-17T03:34:40.193", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-21017", "record": "FKIE_CVE-2021-21017", "field": "lastModified"}, {"timestamp": "2026-06-19T12:47:53.892Z", "date_only": false, "value": "2026-06-19T12:47:53.892481Z", "kind": "sighting", "label": "Exploited", "source": "https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/47dfd02f-9599-4f26-ba4c-a18ee2bd85e3", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "393989cd-b7a3-4b27-862c-a74393053f2d", "url": "https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/47dfd02f-9599-4f26-ba4c-a18ee2bd85e3"}, {"timestamp": "2026-06-23T11:11:17Z", "date_only": false, "value": "2026-06-23T11:11:17+00:00", "kind": "kev", "label": "Recorded", "source": "kevintel", "record": "CVE-2021-21017", "field": "timestamps.recorded_at", "uuid": "255defaf-ceb2-420d-8ebc-b7a4109a80bb", "status": {"status_reason": "confirmed", "exploited": true}}, {"timestamp": "2026-06-23T11:13:25.109Z", "date_only": false, "value": "2026-06-23T11:13:25.109303Z", "kind": "sighting", "label": "Exploited", "source": "https://db.gcve.eu/known-exploited-vulnerabilities-catalog/255defaf-ceb2-420d-8ebc-b7a4109a80bb", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "5ceabcb1-f402-4d80-b1ec-17d6bc4d1d14", "url": "https://db.gcve.eu/known-exploited-vulnerabilities-catalog/255defaf-ceb2-420d-8ebc-b7a4109a80bb"}, {"timestamp": "2026-06-23T14:04:49.864Z", "date_only": false, "value": "2026-06-23T14:04:49.864348Z", "kind": "sighting", "label": "Exploited", "source": "https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/14e5e904-e542-4021-abe9-72a153e225af", "record": "CVE-2021-21017", "field": "creation_timestamp", "uuid": "e56883cc-384c-48dd-b3be-06ccc33e1048", "url": "https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/14e5e904-e542-4021-abe9-72a153e225af"}]}