Vulnerability · Published Jun 12, 2026 · Assigned by hackerone
CVE-2026-47369
Critical 9.9
In plain English
A critical-severity improper input validation in EFG from Ubiquiti Inc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)0.3%top 76.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 escalate privileges within such UniFi OS devices or instances.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Ubiquiti Inc | UniFi OS Server | 0 – before 5.1.15 |
| Ubiquiti Inc | Express | 0 – before 4.0.15 |
| Ubiquiti Inc | UDM | 0 – before 5.1.15 |
| Ubiquiti Inc | UDM-Pro | 0 – before 5.1.15 |
| Ubiquiti Inc | UDM-SE | 0 – before 5.1.15 |
| Ubiquiti Inc | UDM-Pro-Max | 0 – before 5.1.15 |
| Ubiquiti Inc | UDM-Beast | 0 – before 5.1.15 |
| Ubiquiti Inc | EFG | 0 – before 5.1.15 |
| Ubiquiti Inc | UDW | 0 – before 5.1.15 |
| Ubiquiti Inc | UDR | 0 – before 5.1.15 |
| Ubiquiti Inc | UDR7 | 0 – before 5.1.15 |
| Ubiquiti Inc | UDR-5G | 0 – before 5.1.15 |
| Ubiquiti Inc | Express 7 | 0 – before 5.1.15 |
| Ubiquiti Inc | UNVR | 0 – before 5.1.15 |
| Ubiquiti Inc | UNVR-Pro | 0 – before 5.1.15 |
| Ubiquiti Inc | UNVR-Instant | 0 – before 5.1.15 |
| Ubiquiti Inc | UNVR-G2 | 0 – before 5.1.15 |
| Ubiquiti Inc | UNVR-G2-Pro | 0 – before 5.1.15 |
| Ubiquiti Inc | ENVR | 0 – before 5.1.15 |
| Ubiquiti Inc | ENVR-Core | 0 – before 5.1.15 |
| Ubiquiti Inc | UNAS-2 | 0 – before 5.1.16 |
| Ubiquiti Inc | UNAS-4 | 0 – before 5.1.16 |
| Ubiquiti Inc | UNAS-Pro | 0 – before 5.1.16 |
| Ubiquiti Inc | UNAS-Pro-4 | 0 – before 5.1.16 |
| Ubiquiti Inc | UNAS-Pro-8 | 0 – before 5.1.16 |
| Ubiquiti Inc | UCKP | 0 – before 5.1.15 |
| Ubiquiti Inc | UCK | 0 – before 5.1.15 |
| Ubiquiti Inc | UCK-Enterprise | 0 – before 5.1.15 |
| Ubiquiti Inc | UCG-Ultra | 0 – before 5.1.15 |
| Ubiquiti Inc | UCG-Max | 0 – before 5.1.15 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H