CVE-2026-77558: High severity Ubiquiti UniFi Gateway vulnerability
A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker who can reach an affected UniFi gateway over the network can exploit it. No privileges or user interaction are required according to the supplied severity vector.
What is the likely impact of successful exploitation?
Successful exploitation can cause a denial of service on the affected gateway. The provided data indicates availability impact only, with no stated confidentiality or integrity impact.
Are default deployments affected?
The supplied information does not identify any configuration prerequisite. It describes the issue as reachable over the network and does not state that a non-default feature or setting must be enabled.