CVE-2026-21639

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 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://community.ui.com/releases/Security-Advisory-Bulletin-061-061/1e4fe5f8-29c7-4a7d-a518-01b1537983ba	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:ui:airmax_ac_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:ui:airmax_ac:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:ui:airmax_m_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:ui:airmax_m:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:ui:airfiber_af60-xg_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:ui:airfiber_af60-xg:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:o:ui:airfiber_af60_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:ui:airfiber_af60:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-01-08 17:15

Updated : 2026-01-14 21:06

NVD link : CVE-2026-21639

Mitre link : CVE-2026-21639

CVE.ORG link : CVE-2026-21639

JSON object : View

Products Affected

ui

airmax_m
airmax_ac_firmware
airmax_m_firmware
airfiber_af60
airmax_ac
airfiber_af60-xg
airfiber_af60_firmware
airfiber_af60-xg_firmware

CWE

CWE-77

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

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