FKIE_CVE-2026-21638

Vulnerability from fkie_nvd - Published: 2026-01-08 17:15 - Updated: 2026-06-17 10:18
Severity
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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. Affected Products: UBB-XG (Version 1.2.2 and earlier) UDB-Pro/UDB-Pro-Sector (Version 1.4.1 and earlier) UBB (Version 3.1.5 and earlier) Mitigation: Update your UBB-XG to Version 1.2.3 or later. Update your UDB-Pro/UDB-Pro-Sector to Version 1.4.2 or later. Update your UBB to Version 3.1.7 or later.
References
support@hackerone.comhttps://community.ui.com/releases/Security-Advisory-Bulletin-060-060/cde18da7-2bc4-41bb-a9cc-48a4a4c479c1Vendor Advisory
Impacted products
Vendor Product Version
ui ubb-xg_firmware *
ui ubb-xg -
ui udb-pro_firmware *
ui udb-pro -
ui udb-pro-sector_firmware *
ui udb-pro-sector -
ui ubb_firmware *
ui ubb -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "UBB-XG",
          "vendor": "Ubiquiti Inc",
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      ],
      "source": "support@hackerone.com"
    }
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  "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."
    },
    {
      "lang": "es",
      "value": "Un actor malicioso dentro del alcance Wi-Fi del producto afectado podr\u00eda aprovechar una vulnerabilidad en el Protocolo Inal\u00e1mbrico airMAX para lograr una ejecuci\u00f3n remota de c\u00f3digo (RCE) dentro del producto afectado.\n\nProductos Afectados:\nUBB-XG (Versi\u00f3n 1.2.2 y anteriores)\nUDB-Pro/UDB-Pro-Sector (Versi\u00f3n 1.4.1 y anteriores)\nUBB (Versi\u00f3n 3.1.5 y anteriores)\n\nMitigaci\u00f3n:\nActualice su UBB-XG a la Versi\u00f3n 1.2.3 o posterior.\nActualice su UDB-Pro/UDB-Pro-Sector a la Versi\u00f3n 1.4.2 o posterior.\nActualice su UBB a la Versi\u00f3n 3.1.7 o posterior."
    }
  ],
  "id": "CVE-2026-21638",
  "lastModified": "2026-06-17T10:18:51.297",
  "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-21638",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-01-09T04:55:28.516483Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-01-08T17:15:50.357",
  "references": [
    {
      "source": "support@hackerone.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://community.ui.com/releases/Security-Advisory-Bulletin-060-060/cde18da7-2bc4-41bb-a9cc-48a4a4c479c1"
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  "sourceIdentifier": "support@hackerone.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-77"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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Sightings

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