CVE-2026-54403 json
A malicious actor with access to the network could exploit a Path Traversal vulnerability found in certain devices running UniFi OS to bypa…
published 2026-07-02 4 mo ago modified 2026-07-10 4 mo ago also EUVD-2026-41381
- cvss
- 8.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
A malicious actor with access to the network could exploit a Path Traversal vulnerability found in certain devices running UniFi OS to bypass authentication of such UniFi OS devices or instances.
Patch / fix
- Ubiquiti Inc UniFi OS Server 5.1.19
- Ubiquiti Inc Dream Machines 5.1.19
- Ubiquiti Inc Enterprise Fortress Gateway 5.1.19
- Ubiquiti Inc Dream Wall 5.1.19
- Ubiquiti Inc Dream Routers 5.1.19
- Ubiquiti Inc Express 7 5.1.19
- Ubiquiti Inc Cloud Keys 5.1.19
- Ubiquiti Inc Network Video Recorders 5.1.19
- Ubiquiti Inc Enterprise Video Recorders 5.1.19
- Ubiquiti Inc Cloud Gateways 5.1.19
- Ubiquiti Inc Network Attached Storage 5.1.19
- Ubiquiti Inc Enterprise Firewall Core 5.1.19
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N |
Affected products
- Ubiquiti Inc UniFi OS Server
- Ubiquiti Inc Dream Machines
- Ubiquiti Inc Enterprise Fortress Gateway
- Ubiquiti Inc Dream Wall
- Ubiquiti Inc Dream Routers
- Ubiquiti Inc Express 7
- Ubiquiti Inc Cloud Keys
- Ubiquiti Inc Network Video Recorders
- Ubiquiti Inc Enterprise Video Recorders
- Ubiquiti Inc Cloud Gateways
- Ubiquiti Inc Network Attached Storage
- Ubiquiti Inc Enterprise Firewall Core
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
Sources
- CVE List CVE-2026-54403
- NVD CVE-2026-54403
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