Critical severity · published Jun 12, 2026
CVE-2026-47370
A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in certain devices running UniFi OS to execute a…
9.9
CVSS
0.8%
EPSS
No
On KEV
Description
A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in certain devices running UniFi OS to execute a Command Injection within such UniFi OS devices or instances.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EF
EFG · Ubiquiti Inc
before 5.1.15 · source: vendor
EN
ENVR · Ubiquiti Inc
before 5.1.15 · source: vendor
EN
ENVR-Core · Ubiquiti Inc
before 5.1.15 · source: vendor
EX
Express · Ubiquiti Inc
before 4.0.15 · source: vendor
E7
Express 7 · Ubiquiti Inc
before 5.1.15 · source: vendor
UC
UCG-Fiber · Ubiquiti Inc
before 5.1.15 · source: vendor
UC
UCG-Industrial · Ubiquiti Inc
before 5.1.15 · source: vendor
UC
UCG-Max · Ubiquiti Inc
before 5.1.15 · source: vendor
UC
UCG-Ultra · Ubiquiti Inc
before 5.1.15 · source: vendor
UC
UCK · Ubiquiti Inc
before 5.1.15 · source: vendor
UC
UCK-Enterprise · Ubiquiti Inc
before 5.1.15 · source: vendor
UC
UCKP · Ubiquiti Inc
before 5.1.15 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47370
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47370
community.ui.com
https://community.ui.com/releases/Security-Advisory-Bulletin-065-065/aa46a22b-fc43-4eae-9382-6fc8feda967a
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