Critical severity · published Aug 26, 2026
CVE-2026-77545
A malicious actor with access to the network, low privileges and under certain conditions could exploit an Active Debug Code vulnerability found in certain devices running UniFi…
9.0
CVSS
0.4%
EPSS
No
On KEV
Description
A malicious actor with access to the network, low privileges and under certain conditions could exploit an Active Debug Code vulnerability found in certain devices running UniFi OS to escalate privileges within such UniFi OS devices or instances.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CG
Cloud Gateways · Ubiquiti Inc
before 5.1.31 · source: vendor
CK
Cloud Keys · Ubiquiti Inc
before 5.1.31 · source: vendor
DM
Dream Machines · Ubiquiti Inc
before 5.1.31 · source: vendor
DR
Dream Routers · Ubiquiti Inc
before 5.1.31 · source: vendor
DW
Dream Wall · Ubiquiti Inc
before 5.1.31 · source: vendor
EF
Enterprise Firewall Core · Ubiquiti Inc
before 5.1.31 · source: vendor
EF
Enterprise Fortress Gateway · Ubiquiti Inc
before 5.1.31 · source: vendor
EN
Enterprise Network Attached Storage · Ubiquiti Inc
before 5.1.31 · source: vendor
EN
Enterprise Network Video Recorders · Ubiquiti Inc
before 5.1.31 · source: vendor
E7
Express 7 · Ubiquiti Inc
before 5.1.31 · source: vendor
NA
Network Attached Storage · Ubiquiti Inc
before 5.1.32 · source: vendor
NV
Network Video Recorders · Ubiquiti Inc
before 5.1.31 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77545
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-77545
community.ui.com
https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9
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