CVE-2026-21638
Ubiquiti · published 2026-01-08
Source record Collected from the National Vulnerability Database (NVD)
Description
Description by HackerOne via the CVE Program.
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.
Filed by HackerOne; not a statement by Ubiquiti.
Status at the source
- NVD status: Analyzed
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Ubiquiti Inc | UBB-XG | 0 – before 1.2.3: affected |
| Ubiquiti Inc | UDB-Pro/UDB-Pro-Sector | 0 – before 1.4.2: affected |
| Ubiquiti Inc | UBB | 0 – before 3.1.7: affected |
Products named in NVD's CPE match criteria (4)
cpe:2.3:o:ui:ubb-xg_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:ui:udb-pro_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:ui:udb-pro-sector_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:ui:ubb_firmware:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 8.8 HIGH — as published by HackerOne (Secondary)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: none · Automatable: no · Technical impact: total
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
Source dates: published 2026-01-08, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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