CVE-2026-55116 Missing authorization in Cloud Gateways
Attackers on the network can make unauthorized changes to UniFi OS devices under specific configurations, requiring vendor patches.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-55116?
CVE-2026-55116 is a critical missing authorization vulnerability in Ubiquiti Inc Cloud Gateways, published on 2 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A malicious actor with access to the network and under certain network configurations could exploit an Improper Access Control vulnerability found in certain devices running UniFi OS to make unauthorized changes to such UniFi OS devices.
Weakness: CWE-284
Which versions are affected by CVE-2026-55116?
It affects 1 product.
Products include Ui Unifi Connect.
How do I fix CVE-2026-55116?
No fix has been published for CVE-2026-55116 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-55116 being exploited?
There is no known exploitation of CVE-2026-55116 in the wild and no public exploit code.
Sources
Also known as GHSA-hh99-693c-cjm3.