CVE-2026-54400 Privilege escalation in UniFi Access Application

Critical 9.1 Published Updated

Privileged network attackers can escalate privileges on the host device via improper access control in UniFi Access Application.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-54400?

CVE-2026-54400 is a critical vulnerability in Ubiquiti Inc UniFi Access Application, published on 2 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official 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.

Weakness: CWE-284

Which versions are affected by CVE-2026-54400?

It affects 1 product.

Products include Ui Unifi Access.

How do I fix CVE-2026-54400?

No fix has been published for CVE-2026-54400 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-54400 being exploited?

There is no known exploitation of CVE-2026-54400 in the wild and no public exploit code.

Sources

Also known as GHSA-rwfh-5cw2-f7g6.

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