High severity · published May 22, 2026
CVE-2026-34911
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…
7.7
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EF
EFG · Ubiquiti Inc
before 5.1.12 · source: vendor
EN
ENVR · Ubiquiti Inc
before 5.1.12 · source: vendor
EN
ENVR-Core · Ubiquiti Inc
before 5.1.12 · source: vendor
E7
Express 7 · Ubiquiti Inc
before 5.1.12 · source: vendor
UC
UCG-Fiber · Ubiquiti Inc
before 5.1.12 · source: vendor
UC
UCG-Industrial · Ubiquiti Inc
before 5.1.12 · source: vendor
UC
UCG-Max · Ubiquiti Inc
before 5.1.12 · source: vendor
UC
UCG-Ultra · Ubiquiti Inc
before 5.1.12 · source: vendor
UC
UCK · Ubiquiti Inc
before 5.1.12 · source: vendor
UC
UCK-Enterprise · Ubiquiti Inc
before 5.1.12 · source: vendor
UC
UCKP · Ubiquiti Inc
before 5.1.12 · source: vendor
UD
UDM · Ubiquiti Inc
before 5.1.12 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34911
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34911
Patch
https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b
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