CVE-2026-77555
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | ubiquiti inc |
| Product | dream machines |
| Published | Sep 22, 2026 |
| Last Updated | Sep 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Ubiquiti Inc / Dream Machines
0 < 5.1.31
Ubiquiti Inc / Enterprise Firewalls
0 < 5.1.31
Ubiquiti Inc / Dream Routers
0 < 5.1.31
Ubiquiti Inc / Cloud Gateways
0 < 5.1.31
Ubiquiti Inc / Dream Wall
0 < 5.1.31
Ubiquiti Inc / Express
0 < 4.0.21
Ubiquiti Inc / Express 7
0 < 5.1.31
Ubiquiti Inc / UniFi Gateways
0 < 5.1.26