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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

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 : 2026-07-30 06:25

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
airfiber_af60
airmax_ac_firmware
airfiber_af60-xg_firmware
airmax_m_firmware
airfiber_af60_firmware
airfiber_af60-xg

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-77

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

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podr\u00eda aprovechar una vulnerabilidad en el Protocolo Inal\u00e1mbrico airMAX para lograr una ejecuci\u00f3n remota de c\u00f3digo (RCE) dentro del producto afectado.\n\nProductos Afectados:\nairMAX AC (Versi\u00f3n 8.7.20 y anteriores)\nairMAX M (Versi\u00f3n 6.3.22 y anteriores)\nairFiber AF60-XG (Versi\u00f3n 1.2.2 y anteriores)\nairFiber AF60 (Versi\u00f3n 2.6.7 y anteriores)\n\nMitigaci\u00f3n:\nActualice su airMAX AC a la Versi\u00f3n 8.7.21 o posterior.\nActualice su airMAX M a la Versi\u00f3n 6.3.24 o posterior.\nActualice su airFiber AF60-XG a la Versi\u00f3n 1.2.3 o posterior.\nActualice su airFiber AF60 a la Versi\u00f3n 2.6.8 o posterior."}], "lastModified": "2026-07-30T06:25:51.670", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:ui:airmax_ac_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E6CAE32F-15CF-472D-9CB2-2B863A9FF429", "versionEndExcluding": "8.7.21"}], "operator": "OR"}, {"negate": false, "cpeMatch": 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