High severity · published Jul 2, 2026
CVE-2026-55117
A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi Access Application to access files on the host device
8.6
CVSS
0.6%
EPSS
No
On KEV
Description
A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi Access Application to access files on the host device.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UA
UniFi Access Application · Ubiquiti Inc
before 4.2.29 · source: vendor
UA
Unifi Access · UI
before 4.2.29 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55117
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55117
Vendor Advisory
https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc
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