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    CVE-2026-54402

    A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in UniFi OS to execute a Command Injection on the host device.

    Published:Jul 2, 2026
    Last Modified:Aug 12, 2026
    EPS:Jul 2, 2026
    EPSS Score:0.01305
    CVSS Score:9.9

    Affected Products

    Vendor
    Ui
    Product
    Enterprise Firewall Core
    Vendor
    Ui
    Product
    Enterprise Firewall Core Firmware
    Vendor
    Ui
    Product
    Enterprise Fortress Gateway
    Vendor
    Ui
    Product
    Enterprise Fortress Gateway Firmware
    Vendor
    Ui
    Product
    Enterprise Network Video Recorder
    Vendor
    Ui
    Product
    Enterprise Network Video Recorder Core
    Vendor
    Ui
    Product
    Enterprise Network Video Recorder Core Firmware
    Vendor
    Ui
    Product
    Enterprise Network Video Recorder Firmware
    Vendor
    Ui
    Product
    Unas 2
    Vendor
    Ui
    Product
    Unas 2 Firmware
    Vendor
    Ui
    Product
    Unas 4
    Vendor
    Ui
    Product
    Unas 4 Firmware
    Vendor
    Ui
    Product
    Unas Pro
    Vendor
    Ui
    Product
    Unas Pro 4
    Vendor
    Ui
    Product
    Unas Pro 4 Firmware
    Vendor
    Ui
    Product
    Unas Pro 8
    Vendor
    Ui
    Product
    Unas Pro 8 Firmware
    Vendor
    Ui
    Product
    Unas Pro Firmware
    Vendor
    Ui
    Product
    Unifi Cloud Gateway Fiber
    Vendor
    Ui
    Product
    Unifi Cloud Gateway Fiber Firmware
    Vendor
    Ui
    Product
    Unifi Cloud Gateway Industrial
    Vendor
    Ui
    Product
    Unifi Cloud Gateway Industrial Firmware
    Vendor
    Ui
    Product
    Unifi Cloud Gateway Max
    Vendor
    Ui
    Product
    Unifi Cloud Gateway Max Firmware
    Vendor
    Ui
    Product
    Unifi Cloud Gateway Ultra
    Vendor
    Ui
    Product
    Unifi Cloud Gateway Ultra Firmware
    Vendor
    Ui
    Product
    Unifi Cloud Key Plus
    Vendor
    Ui
    Product
    Unifi Cloud Key Plus Firmware
    Vendor
    Ui
    Product
    Unifi Cloudkey
    Vendor
    Ui
    Product
    Unifi Cloudkey Enterprise
    Vendor
    Ui
    Product
    Unifi Cloudkey Enterprise Firmware
    Vendor
    Ui
    Product
    Unifi Cloudkey Firmware
    Vendor
    Ui
    Product
    Unifi Dream Machine
    Vendor
    Ui
    Product
    Unifi Dream Machine Beast
    Vendor
    Ui
    Product
    Unifi Dream Machine Beast Firmware
    Vendor
    Ui
    Product
    Unifi Dream Machine Firmware
    Vendor
    Ui
    Product
    Unifi Dream Machine Pro
    Vendor
    Ui
    Product
    Unifi Dream Machine Pro Firmware
    Vendor
    Ui
    Product
    Unifi Dream Machine Pro Max
    Vendor
    Ui
    Product
    Unifi Dream Machine Pro Max Firmware
    Vendor
    Ui
    Product
    Unifi Dream Machine Special Edition
    Vendor
    Ui
    Product
    Unifi Dream Machine Special Edition Firmware
    Vendor
    Ui
    Product
    Unifi Dream Router
    Vendor
    Ui
    Product
    Unifi Dream Router 5g Max
    Vendor
    Ui
    Product
    Unifi Dream Router 5g Max Firmware
    Vendor
    Ui
    Product
    Unifi Dream Router 7
    Vendor
    Ui
    Product
    Unifi Dream Router 7 Firmware
    Vendor
    Ui
    Product
    Unifi Dream Router Firmware
    Vendor
    Ui
    Product
    Unifi Dream Wall
    Vendor
    Ui
    Product
    Unifi Dream Wall Firmware
    Vendor
    Ui
    Product
    Unifi Express 7
    Vendor
    Ui
    Product
    Unifi Express 7 Firmware
    Vendor
    Ui
    Product
    Unifi Network Video Recorder
    Vendor
    Ui
    Product
    Unifi Network Video Recorder Firmware
    Vendor
    Ui
    Product
    Unifi Network Video Recorder G2
    Vendor
    Ui
    Product
    Unifi Network Video Recorder G2 Firmware
    Vendor
    Ui
    Product
    Unifi Network Video Recorder G2 Pro
    Vendor
    Ui
    Product
    Unifi Network Video Recorder G2 Pro Firmware
    Vendor
    Ui
    Product
    Unifi Network Video Recorder Instant
    Vendor
    Ui
    Product
    Unifi Network Video Recorder Instant Firmware
    Vendor
    Ui
    Product
    Unifi Network Video Recorder Pro
    Vendor
    Ui
    Product
    Unifi Network Video Recorder Pro Firmware
    Vendor
    Ui
    Product
    Unifi Os Server

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-15 Command Delimiters
    CAPEC-153 Input Data Manipulation
    CAPEC-182 Flash Injection
    CAPEC-183 IMAP/SMTP Command Injection
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-248 Command Injection
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-40 Manipulating Writeable Terminal Devices
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-588 DOM-Based XSS
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-75 Manipulating Writeable Configuration Files
    CAPEC-76 Manipulating Web Input to File System Calls
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    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