CVE-2026-77544: High severity Ubiquiti UniFi Gateway vulnerability
Published Sep 22, 2026
·Updated
A malicious actor with access to the network could exploit an Out-of-bounds Write vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.
Affected Software
1 affected component
Ubiquiti UniFi Gateway
Event History
Sep 22, 2026
CVE Published
via MITRE·06:34 PM
Data Sourced
via MITRE·06:34 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:16 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
Who can exploit this issue?
An attacker who has access to the network can exploit the vulnerability. No privileges or user interaction are required.
2
What is the impact of successful exploitation?
Successful exploitation can cause a denial of service on the affected UniFi gateway device. The provided information does not indicate confidentiality or integrity impact.
3
Are all UniFi gateway devices affected?
The advisory states that certain UniFi gateway devices are affected, but the provided information does not identify the specific models or versions.