CVE-2026-47370
Critical
Description
A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in certain devices running UniFi OS to execute a Command Injection within such UniFi OS devices or instances.
SeverityCritical
CVSS9.9
Exploit probability—
Product
UniFi OS Server
PublishedJun 12, 2026
First seenJun 12, 2026
Weakness typeCWE-20Improper input validation
How to fix
Update
- Ubiquiti Inc UniFi OS Server5.1.15 or later
- Ubiquiti Inc Express4.0.15 or later
- Ubiquiti Inc UDM5.1.15 or later
- Ubiquiti Inc UDM-Pro5.1.15 or later
- Ubiquiti Inc UDM-SE5.1.15 or later
- Ubiquiti Inc UDM-Pro-Max5.1.15 or later
- Ubiquiti Inc UDM-Beast5.1.15 or later
- Ubiquiti Inc EFG5.1.15 or later
- Ubiquiti Inc UDW5.1.15 or later
- Ubiquiti Inc UDR5.1.15 or later
- Ubiquiti Inc UDR75.1.15 or later
- Ubiquiti Inc UDR-5G5.1.15 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Ubiquiti Inc UniFi OS Server | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc Express | v < 4.0.15 | 4.0.15 |
| Ubiquiti Inc UDM | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UDM-Pro | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UDM-SE | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UDM-Pro-Max | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UDM-Beast | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc EFG | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UDW | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UDR | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UDR7 | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UDR-5G | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc Express 7 | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UNVR | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UNVR-Pro | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UNVR-Instant | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UNVR-G2 | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UNVR-G2-Pro | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc ENVR | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc ENVR-Core | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UNAS-2 | v < 5.1.16 | 5.1.16 |
| Ubiquiti Inc UNAS-4 | v < 5.1.16 | 5.1.16 |
| Ubiquiti Inc UNAS-Pro | v < 5.1.16 | 5.1.16 |
| Ubiquiti Inc UNAS-Pro-4 | v < 5.1.16 | 5.1.16 |
| Ubiquiti Inc UNAS-Pro-8 | v < 5.1.16 | 5.1.16 |
| Ubiquiti Inc UCKP | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UCK | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UCK-Enterprise | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UCG-Ultra | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UCG-Max | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UCG-Fiber | v < 5.1.15 | 5.1.15 |
| Ubiquiti Inc UCG-Industrial | v < 5.1.15 | 5.1.15 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.