Vulnerability Intelligence Report
Ubiquiti UniFi OS Improper Access Control Vulnerability
CVE-2026-34908
A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unauthorized changes to the system.
CISA KEV
Nuclei Template
SSVC: Active Exploitation
Automatable
CVSS Base Score
10.0
CRITICAL
Exploitability:3.9
Impact Score:6.1
EPSS Probability:2.10%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-284 ↗CWE-284 Improper Access Control - Generic
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Ubiquiti Inc | UniFi OS Server | 0 < 5.0.8 (affected) |
| Ubiquiti Inc | UDM | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UDM-Pro | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UDM-SE | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UDM-Pro-Max | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UDM-Beast | 0 < 5.1.11 (affected) |
| Ubiquiti Inc | EFG | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UDW | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UDR | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UDR7 | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UDR-5G | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | Express 7 | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UNVR | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UNVR-Pro | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UNVR-Instant | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UNVR-G2 | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UNVR-G2-Pro | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | ENVR | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | ENVR-Core | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UNAS-2 | 0 < 5.1.10 (affected) |
| Ubiquiti Inc | UNAS-4 | 0 < 5.1.10 (affected) |
| Ubiquiti Inc | UNAS-Pro | 0 < 5.1.10 (affected) |
| Ubiquiti Inc | UNAS-Pro-4 | 0 < 5.1.10 (affected) |
| Ubiquiti Inc | UNAS-Pro-8 | 0 < 5.1.10 (affected) |
| Ubiquiti Inc | UCKP | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UCK | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UCK-Enterprise | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UCG-Ultra | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UCG-Max | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UCG-Fiber | 0 < 5.1.12 (affected) |
| Ubiquiti Inc | UCG-Industrial | 0 < 5.1.12 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
CISA KEV
ACTIVE IN CATALOG
Nuclei Template
SCANNER AVAILABLE
EPSS Score
2.105%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | HackerOne · Bug Bounty Provider · USA |
| Reserved | 2026-03-31T15:00:06 |
| Published | 2026-05-22T00:43:49 |
| Last Updated | 2026-06-24T03:55:50 |
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