CVE-2026-21638

HighCVSS 8.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-77

Affected software

Vendor	Product	Versions
Ubiquiti Inc	UBB-XG	< 1.2.3
Ubiquiti Inc	UDB-Pro/UDB-Pro-Sector	< 1.4.2
Ubiquiti Inc	UBB	< 3.1.7

References

https://community.ui.com/releases/Security-Advisory-Bulletin-060-060/cde18da7-2bc4-41bb-a9cc-48a4a4c479c1Vendor Advisory

Timeline

Published: Jan 8, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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