CVE-2026-21639

MEDIUM
5.4CVSS v3
CVSS v2
0.27% EPSS (exploit probability)
CWE-77CWE

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:

airMAX AC (Version 8.7.20 and earlier)
airMAX M (Version 6.3.22 and earlier)
airFiber AF60-XG (Version 1.2.2 and earlier)
airFiber AF60 (Version 2.6.7 and earlier)



Mitigation:

Update your airMAX AC to Version 8.7.21 or later.
Update your airMAX M to Version 6.3.24 or later.
Update your airFiber AF60-XG to Version 1.2.3 or later.
Update your airFiber AF60 to Version 2.6.8 or later.

CVSS v3 vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected routers (1)

VendorModelMatched viaAffected versionsFixed inPatch Status
Ubiquiti Ubiquiti airMAX (airOS) Unpatched

External references