← Vulnerability feed

Vulnerability record · CVE-2026-54400 · published 2 July 2026

CVE-2026-54400: Ui unifi access improper access control vulnerability

Ui · Unifi Access

A malicious actor with access to the network and high privileges could exploit an Improper Access Control vulnerability found in UniFi Access Application to escalate privileges on the host device.

9.1 CVSS 3.1 Critical EPSS 0.52% · top 57.8% CWE-284 · Improper access control
9.1CVSS 3.1 base score
0.52%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Aug 2026Last modified by NVD

Description

A malicious actor with access to the network and high privileges could exploit an Improper Access Control vulnerability found in UniFi Access Application to escalate privileges on the host device.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc Vendor Advisory

Track CVE-2026-54400 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2025-52665Ui unifi access missing authentication for critical function vulnerabilityA malicious actor with access to the management network could exploit a misconfiguration in UniFi’s door access application, UniFi Access, that expos…EPSS 41%9.9CVE-2026-50748Ui unifi access improper input validation vulnerabilityA malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in UniFi Access Applic…EPSS 1.6%8.6CVE-2026-55117Ui unifi access path traversal vulnerabilityA malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi Access Application to access files on the ho…EPSS 0.56%7.8CVE-2026-81963Windows Update Stack link-following privilege escalationWindows Update Stack resolves links improperly before accessing files, a link-following flaw (CWE-59) compounded by improper access control (CWE-284)…KEVEPSS 0.39%analysed10.0CVE-2026-21962Oracle HTTP Server and WebLogic Proxy Plug-in improper access controlOracle HTTP Server and the WebLogic Server Proxy Plug-in (for Apache HTTP Server and IIS) contain an improper access control flaw (CWE-284) in suppor…KEVEPSS 71%analysed10.0CVE-2026-34908Ubiquiti UniFi OS improper access control allows unauthorized system changesUniFi OS devices contain an improper access control flaw (CWE-284) that lets a network-reachable actor make unauthorized changes to the system. The C…KEVEPSS 15%analysed10.0CVE-2026-48907JCE editor for Joomla allows unauthenticated profile creation and PHP uploadThe JCE editor extension for Joomla permits unauthenticated users to create new editor profiles, which leads to upload and execution of PHP code. Thi…KEVEPSS 16%analysed9.8CVE-2026-35616FortiClientEMS improper access control allows unauthenticated code executionFortinet FortiClientEMS 7.4.5 through 7.4.6 contains an improper access control flaw (CWE-284) that lets an unauthenticated attacker send crafted req…KEVEPSS 9.1%analysed

Source: NIST National Vulnerability Database (record CVE-2026-54400), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.