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    CVE-2026-21638

    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.

    Published:Jan 8, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 8, 2026
    EPSS Score:0.00209
    CVSS Score:8.8

    Affected Products

    Vendor
    Ubiquiti
    Product
    Ubb
    Vendor
    Ubiquiti
    Product
    Ubb-xg
    Vendor
    Ubiquiti
    Product
    Udb-pro
    Vendor
    Ubiquiti
    Product
    Udb-pro-sector
    Vendor
    Ui
    Product
    Ubb
    Vendor
    Ui
    Product
    Ubb-xg
    Vendor
    Ui
    Product
    Ubb-xg Firmware
    Vendor
    Ui
    Product
    Ubb Firmware
    Vendor
    Ui
    Product
    Udb-pro
    Vendor
    Ui
    Product
    Udb-pro-sector
    Vendor
    Ui
    Product
    Udb-pro-sector Firmware
    Vendor
    Ui
    Product
    Udb-pro Firmware

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High