CVE-2026-34909
A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to access an underlying account.
Actively exploited
- In the CISA exploited-vulnerabilities catalogue since Jun 23, 2026
- US federal agencies must remediate it by Jun 26, 2026 (BOD 22-01)
- First attack observed 18 days after disclosure
- Confirmed by sensors, not only by reports
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Source: CISA KEV · Sep 21, 2026 Aug 31, 2026 Jul 27, 2026 Jul 10, 2026 Jun 23, 2026 Jun 9, 2026
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HAffected products
| Vendors | Product | Versions |
|---|---|---|
| ui | unifi os server | < 5.0.8 |
| ui | unifi cloud gateway industrial firmware | < 5.1.12 |
| ui | unifi cloud gateway industrial | - |
| ui | unifi dream machine firmware | < 5.1.12 |
| ui | unifi dream machine | - |
| ui | unifi dream machine pro firmware | < 5.1.12 |
| ui | unifi dream machine pro | - |
| ui | unifi dream machine special edition firmware | < 5.1.12 |
| ui | unifi dream machine special edition | - |
| ui | unifi dream machine pro max firmware | < 5.1.12 |
| ui | unifi dream machine pro max | - |
| ui | enterprise fortress gateway firmware | < 5.1.12 |
| ui | enterprise fortress gateway | - |
| ui | unifi dream wall firmware | < 5.1.12 |
| ui | unifi dream wall | - |
| ui | unifi dream router firmware | < 5.1.12 |
| ui | unifi dream router | - |
| ui | unifi dream router 7 firmware | < 5.1.12 |
| ui | unifi dream router 7 | - |
| ui | unifi express 7 firmware | < 5.1.12 |
| ui | unifi express 7 | - |
| ui | unifi network video recorder firmware | < 5.1.12 |
| ui | unifi network video recorder | - |
| ui | unifi network video recorder pro firmware | < 5.1.12 |
| ui | unifi network video recorder pro | - |
Related articles
This product uses the NVD API but is not endorsed or certified by the NVD.