Vulnerability · Published May 22, 2026 · Assigned by hackerone
CVE-2026-34911
High 7.7
In plain English
A high-severity path traversal 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 0.7% (higher than 53% of all known vulnerabilities).
Severity (CVSS 3.1)7.7High
Exploit odds (30 days)0.7%top 47.4% 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 a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to obtain sensitive information.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Ubiquiti Inc | UniFi OS Server | 0 – before 5.0.8 |
| Ubiquiti Inc | UDM | 0 – before 5.1.12 |
| Ubiquiti Inc | UDM-Pro | 0 – before 5.1.12 |
| Ubiquiti Inc | UDM-SE | 0 – before 5.1.12 |
| Ubiquiti Inc | UDM-Pro-Max | 0 – before 5.1.12 |
| Ubiquiti Inc | UDM-Beast | 0 – before 5.1.11 |
| Ubiquiti Inc | EFG | 0 – before 5.1.12 |
| Ubiquiti Inc | UDW | 0 – before 5.1.12 |
| Ubiquiti Inc | UDR | 0 – before 5.1.12 |
| Ubiquiti Inc | UDR7 | 0 – before 5.1.12 |
| Ubiquiti Inc | UDR-5G | 0 – before 5.1.12 |
| Ubiquiti Inc | Express 7 | 0 – before 5.1.12 |
| Ubiquiti Inc | UNVR | 0 – before 5.1.12 |
| Ubiquiti Inc | UNVR-Pro | 0 – before 5.1.12 |
| Ubiquiti Inc | UNVR-Instant | 0 – before 5.1.12 |
| Ubiquiti Inc | UNVR-G2 | 0 – before 5.1.12 |
| Ubiquiti Inc | UNVR-G2-Pro | 0 – before 5.1.12 |
| Ubiquiti Inc | ENVR | 0 – before 5.1.12 |
| Ubiquiti Inc | ENVR-Core | 0 – before 5.1.12 |
| Ubiquiti Inc | UNAS-2 | 0 – before 5.1.10 |
| Ubiquiti Inc | UNAS-4 | 0 – before 5.1.10 |
| Ubiquiti Inc | UNAS-Pro | 0 – before 5.1.10 |
| Ubiquiti Inc | UNAS-Pro-4 | 0 – before 5.1.10 |
| Ubiquiti Inc | UNAS-Pro-8 | 0 – before 5.1.10 |
| Ubiquiti Inc | UCKP | 0 – before 5.1.12 |
| Ubiquiti Inc | UCK | 0 – before 5.1.12 |
| Ubiquiti Inc | UCK-Enterprise | 0 – before 5.1.12 |
| Ubiquiti Inc | UCG-Ultra | 0 – before 5.1.12 |
| Ubiquiti Inc | UCG-Max | 0 – before 5.1.12 |
| Ubiquiti Inc | UCG-Fiber | 0 – before 5.1.12 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N