CVE-2026-21638_CVE-2026-21638

8.8 / 10

HIGH

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

Description

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.

AI Analysis

Remote code execution vulnerability in airMAX Wireless Protocol

Basic Information

ID CVE-2026-21638

Source hackerone

Published Jan 8, 2026 at 16:14

Modified Jan 8, 2026 at 16:48

Affected Product

Vendor Ubiquiti Inc

Product UBB-XG

Affected Versions Ubiquiti Inc UBB-XG 0
Ubiquiti Inc UDB-Pro/UDB-Pro-Sector 0
Ubiquiti Inc UBB 0

CWE Classification

CWE-77

AI Assessment

AI Score 8.8 / 10

AI Severity High

Vendor Ubiquiti Inc

Product airMAX Wireless Protocol

Version 1.2.2 and earlier, 1.4.1 and earlier, 3.1.5 and earlier

References

community.ui.com /releases/Security-Advisory-Bulletin-060-060/cde18da7-2bc4-41bb-a9cc-48a4a4c479c1

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    "published": "2026-01-08T16:14:22.563Z",
    "modified": "2026-01-08T16:48:23.752Z",
    "type": "cve",
    "title": "CVE-2026-21638",
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