{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-21638", "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "state": "PUBLISHED", "assignerShortName": "hackerone", "dateReserved": "2026-01-01T15:00:02.339Z", "datePublished": "2026-01-08T16:14:22.563Z", "dateUpdated": "2026-01-09T04:55:27.784Z"}, "containers": {"cna": {"descriptions": [{"lang": "en", "value": "A malicious actor in Wi-Fi range of the affected product could leverage a vulnerability in the airMAX Wireless Protocol to achieve a remote code execution (RCE) within the affected product.\r\n\r\n\r\nAffected Products:\r\nUBB-XG (Version 1.2.2 and earlier) \r\nUDB-Pro/UDB-Pro-Sector (Version 1.4.1 and earlier) \r\nUBB (Version 3.1.5 and earlier) \r\n \r\nMitigation:\r\nUpdate your UBB-XG to Version 1.2.3 or later.\r\nUpdate your UDB-Pro/UDB-Pro-Sector to Version 1.4.2 or later.\r\nUpdate your UBB to Version 3.1.7 or later."}], "affected": [{"defaultStatus": "unaffected", "vendor": "Ubiquiti Inc", "product": "UBB-XG", "versions": [{"version": "0", "status": "affected", "lessThan": "1.2.3", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "vendor": "Ubiquiti Inc", "product": "UDB-Pro/UDB-Pro-Sector", "versions": [{"version": "0", "status": "affected", "lessThan": "1.4.2", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "vendor": "Ubiquiti Inc", "product": "UBB", "versions": [{"version": "0", "status": "affected", "lessThan": "3.1.7", "versionType": "semver"}]}], "references": [{"url": "https://community.ui.com/releases/Security-Advisory-Bulletin-060-060/cde18da7-2bc4-41bb-a9cc-48a4a4c479c1"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}}], "providerMetadata": {"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone", "dateUpdated": "2026-01-08T16:14:22.563Z"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-77", "lang": "en", "description": "CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-01-08T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-21638"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-09T04:55:27.784Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-21638", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-01-08T16:48:03.850272Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-77", "description": "CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-08T16:48:20.274Z"}}], "cna": {"metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 8.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}}], "affected": [{"vendor": "Ubiquiti Inc", "product": "UBB-XG", "versions": [{"status": "affected", "version": "0", "lessThan": "1.2.3", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "UDB-Pro/UDB-Pro-Sector", "versions": [{"status": "affected", "version": "0", "lessThan": "1.4.2", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "UBB", "versions": [{"status": "affected", "version": "0", "lessThan": "3.1.7", "versionType": "semver"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://community.ui.com/releases/Security-Advisory-Bulletin-060-060/cde18da7-2bc4-41bb-a9cc-48a4a4c479c1"}], "descriptions": [{"lang": "en", "value": "A malicious actor in Wi-Fi range of the affected product could leverage a vulnerability in the airMAX Wireless Protocol to achieve a remote code execution (RCE) within the affected product.\r\n\r\n\r\nAffected Products:\r\nUBB-XG (Version 1.2.2 and earlier) \r\nUDB-Pro/UDB-Pro-Sector (Version 1.4.1 and earlier) \r\nUBB (Version 3.1.5 and earlier) \r\n \r\nMitigation:\r\nUpdate your UBB-XG to Version 1.2.3 or later.\r\nUpdate your UDB-Pro/UDB-Pro-Sector to Version 1.4.2 or later.\r\nUpdate your UBB to Version 3.1.7 or later."}], "providerMetadata": {"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone", "dateUpdated": "2026-01-08T16:14:22.563Z"}}}, "cveMetadata": {"cveId": "CVE-2026-21638", "state": "PUBLISHED", "dateUpdated": "2026-01-08T16:48:23.752Z", "dateReserved": "2026-01-01T15:00:02.339Z", "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "datePublished": "2026-01-08T16:14:22.563Z", "assignerShortName": "hackerone"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A malicious actor in Wi-Fi range of the affected product could leverage a vulnerability in the airMAX Wireless Protocol to achieve a remote code execution (RCE) within the affected product.\r\n\r\n\r\nAffected Products:\r\nUBB-XG (Version 1.2.2 and earlier) \r\nUDB-Pro/UDB-Pro-Sector (Version 1.4.1 and earlier) \r\nUBB (Version 3.1.5 and earlier) \r\n \r\nMitigation:\r\nUpdate your UBB-XG to Version 1.2.3 or later.\r\nUpdate your UDB-Pro/UDB-Pro-Sector to Version 1.4.2 or later.\r\nUpdate your UBB to Version 3.1.7 or later."}], "id": "CVE-2026-21638", "lastModified": "2026-01-08T18:08:18.457", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "support@hackerone.com", "type": "Secondary"}]}, "published": "2026-01-08T17:15:50.357", "references": [{"source": "support@hackerone.com", "url": "https://community.ui.com/releases/Security-Advisory-Bulletin-060-060/cde18da7-2bc4-41bb-a9cc-48a4a4c479c1"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

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{"created": "2026-01-09T13:24:43.007954+00:00", "updated": "2026-01-09T13:24:43.007998+00:00", "vendors": ["ubiquiti", "ubiquiti$PRODUCT$ubb", "ubiquiti$PRODUCT$ubb-xg", "ubiquiti$PRODUCT$udb-pro", "ubiquiti$PRODUCT$udb-pro-sector"]}