CVE-2026-54400CWE-284broken-access-control

CVE-2026-54400

Critical · published July 2, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
43.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00524 · 43.6th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-07-02T19:17Z
Affected products (1)
ProductVersionsFixed in
ui/unifi_access< 4.2.294.2.29
References (1)
https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc · [email protected]
EPSS history
Timeline
  • 02 JUL 14:49Z
    A malicious actor with access to the network and high privileges could exploit an Improper Access Control vulnerability found in UniFi Access Application to…
    cvelistv5