Vulnerability · Published Sep 8, 2026 · Assigned by TPLink
CVE-2026-81531Unauthenticated Account Information Disclosure in Multiple Omada Controllers
Medium 6.9
In plain English
A medium-severity information exposure in Omada Software Controller from TP-Link System Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TP-Link System Inc. | Omada Software Controller | 0 – before 6.3.0.45 |
| TP-Link Systems Inc. | OC200 V1 | 0 – before (UN)_V1_1.42.10 Build 20260825 |
| TP Link Systems Inc. | OC200 v2 | 0 – before (UN)_V2_2.27.10 Build 20260825 |
| TP-Link Systems Inc | OC200 v3 | 0 – before (UN)_V3_3.4.10 Build 20260825 |
| TP-Link Systems Inc. | OC220 v1 | 0 – before (UN)_V1_1.7.10 Build 20260825 |
| TP-Link Systems Inc | OC220 v2 | 0 – before (UN)_V2_2.6.10 Build 20260825 |
| TP-Link Systems Inc. | OC300 v1 | 0 – before (UN)_V1_1.36.10 Build 20260825 |
| TP-Link Systems Inc. | OC400 v1 | 0 – before (UN)_V1_1.14.10 Build 20260825 |
Weakness: CWE-200 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N