Vulnerability-Lookup

GHSA-M92X-4JG5-V4PX

Vulnerability from github – Published: 2026-01-08 18:30 – Updated: 2026-01-08 18:30

Details

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.

Severity ?

8.8 (High)


                  
                    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-21638"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-08T17:15:50Z",
    "severity": "HIGH"
  },
  "details": "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.\n\n\nAffected Products:\nUBB-XG (Version 1.2.2 and earlier) \nUDB-Pro/UDB-Pro-Sector  (Version 1.4.1 and earlier) \nUBB  (Version 3.1.5 and earlier) \n \nMitigation:\nUpdate your UBB-XG to Version 1.2.3 or later.\nUpdate your UDB-Pro/UDB-Pro-Sector  to Version 1.4.2 or later.\nUpdate your UBB to Version 3.1.7 or later.",
  "id": "GHSA-m92x-4jg5-v4px",
  "modified": "2026-01-08T18:30:50Z",
  "published": "2026-01-08T18:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21638"
    },
    {
      "type": "WEB",
      "url": "https://community.ui.com/releases/Security-Advisory-Bulletin-060-060/cde18da7-2bc4-41bb-a9cc-48a4a4c479c1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-21638 (GCVE-0-2026-21638)

Vulnerability from cvelistv5 – Published: 2026-01-08 16:14 – Updated: 2026-01-09 04:55

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.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')

Assigner

hackerone

References

URL

Tags

https://community.ui.com/releases/Security-Adviso…

Impacted products

Vendor

Product

Version

Ubiquiti Inc

UBB-XG

Affected: 0 , < 1.2.3 (semver)

	Ubiquiti Inc	UDB-Pro/UDB-Pro-Sector	Affected: 0 , < 1.4.2 (semver)
	Ubiquiti Inc	UBB	Affected: 0 , < 3.1.7 (semver)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-21638",
                "options": [
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                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-08T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        ],
        "problemTypes": [
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            "descriptions": [
              {
                "cweId": "CWE-77",
                "description": "CWE-77 Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-09T04:55:27.784Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    "cna": {
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          "product": "UBB",
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      ],
      "descriptions": [
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          "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."
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      "metrics": [
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          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
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    "dateReserved": "2026-01-01T15:00:02.339Z",
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-M92X-4JG5-V4PX

CVE-2026-21638 (GCVE-0-2026-21638)

Tags

Sightings

Nomenclature