Medium severity · published Sep 8, 2026
CVE-2026-81531
Unauthenticated Account Information Disclosure in Multiple Omada Controllers
6.9
CVSS
0.7%
EPSS
No
On KEV
Description
An information
disclosure vulnerability has been identified in Omada Controller. An API endpoint intended for Controller initialization
remains accessible after completion and may disclose account-related
information to unauthenticated remote users.
Successful
exploitation may allow an attacker to remote query the affected endpoint that
may facilitate user enumeration and subsequent attacks targeting administrative
accounts.
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
OV
OC200 V1 · TP-Link Systems Inc.
before (UN)_V1_1.42.10 Build 20260825 · source: vendor
OV
OC200 v2 · TP Link Systems Inc.
before (UN)_V2_2.27.10 Build 20260825 · source: vendor
OV
OC200 v3 · TP-Link Systems Inc
before (UN)_V3_3.4.10 Build 20260825 · source: vendor
OV
OC220 v1 · TP-Link Systems Inc.
before (UN)_V1_1.7.10 Build 20260825 · source: vendor
OV
OC220 v2 · TP-Link Systems Inc
before (UN)_V2_2.6.10 Build 20260825 · source: vendor
OV
OC300 v1 · TP-Link Systems Inc.
before (UN)_V1_1.36.10 Build 20260825 · source: vendor
OV
OC400 v1 · TP-Link Systems Inc.
before (UN)_V1_1.14.10 Build 20260825 · source: vendor
OS
Omada Software Controller · TP-Link System Inc.
before 6.3.0.45 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-81531
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-81531
support.omadanetworks.com
https://support.omadanetworks.com/en/download/software/omada-controller/
support.omadanetworks.com
https://support.omadanetworks.com/us/document/133567/
support.omadanetworks.com
https://support.omadanetworks.com/us/download/software/omada-controller/
