CVE-2026-54402Network attack vector

Authenticated command execution

Published Jul 2, 2026 · Updated Jul 2, 2026

Command injection in Ubiquiti UniFi OS before 5.1.19 allows remote authenticated users to execute commands on the host device. Ubiquiti has not disclosed the affected component, input field, or unsafe command-building operation. A low-privileged account with network access is required, and successful exploitation grants control of host data and services.

CVSS severity9.9
Critical
EPSS probability1.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Ubiquiti UniFi OS before 5.1.19 allows remote authenticated users to execute commands on the host device. Ubiquiti has not disclosed the affected component, input field, or unsafe command-building operation. A low-privileged account with network access is required, and successful exploitation grants control of host data and services.

The record

CVE
CVE-2026-54402
Published
Jul 2, 2026
Updated
Jul 2, 2026
Vendor
Ubiquiti Inc.
Product
Enterprise NVR
Classifications
CWE-20, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.1.19

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ubiquiti Inc. · Enterprise NVRversion=0 <5.1.19
Ubiquiti Inc. · UniFi Cloud Keysversion=0 <5.1.19
Ubiquiti Inc. · UniFi Network Video Recordersversion=0 <5.1.19
Ubiquiti Inc. · UniFi Express 7version=0 <5.1.19
Ubiquiti Inc. · Enterprise Fortress Gatewayversion=0 <5.1.19
Ubiquiti Inc. · Enterprise Firewall Coreversion=0 <5.1.19
Ubiquiti Inc. · UniFi Network Attached Storageversion=0 <5.1.19
Ubiquiti Inc. · UniFi Cloud Gatewaysversion=0 <5.1.19
Ubiquiti Inc. · Dream Machinesversion=0 <5.1.19
Ubiquiti Inc. · UniFi OS Serverversion=0 <5.1.19
Ubiquiti Inc. · Dream Wallversion=0 <5.1.19
Ubiquiti Inc. · Dream Routersversion=0 <5.1.19

Published CVSS scores

9.9HackerOne CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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