Unauthenticated Account Information Disclosure in Multiple Omada Controllers
Summary
| CVE | CVE-2026-81531 |
|---|---|
| State | PUBLISHED |
| Assigner | TPLink |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-08 17:18:32 UTC |
| Updated | 2026-09-21 18:17:10 UTC |
| 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. |
Risk And Classification
Primary CVSS: v4.0 6.9 MEDIUM from f23511db-6c3e-4e32-a477-6aa17d310630
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.003830000 probability, percentile 0.322370000 (date 2026-09-22)
Problem Types: CWE-200 | CWE-200 CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | f23511db-6c3e-4e32-a477-6aa17d310630 | Secondary | 6.9 | MEDIUM | 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/E:X/C... |
| 4.0 | CNA | CVSS | 6.9 | MEDIUM | 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 |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowAttack Requirements
NonePrivileges Required
NoneUser Interaction
NoneConfidentiality
LowIntegrity
NoneAvailability
NoneSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | TP-Link System Inc. | Omada Software Controller | affected 6.3.0.45 custom | Windows, Linux |
| CNA | TP-Link Systems Inc. | OC200 V1 | affected (UN)_V1_1.42.10 Build 20260825 custom | Not specified |
| CNA | TP Link Systems Inc. | OC200 V2 | affected (UN)_V2_2.27.10 Build 20260825 custom | Not specified |
| CNA | TP-Link Systems Inc | OC200 V3 | affected (UN)_V3_3.4.10 Build 20260825 custom | Not specified |
| CNA | TP-Link Systems Inc. | OC220 V1 | affected (UN)_V1_1.7.10 Build 20260825 custom | Not specified |
| CNA | TP-Link Systems Inc | OC220 V2 | affected (UN)_V2_2.6.10 Build 20260825 custom | Not specified |
| CNA | TP-Link Systems Inc. | OC300 V1 | affected (UN)_V1_1.36.10 Build 20260825 custom | Not specified |
| CNA | TP-Link Systems Inc. | OC400 V1 | affected (UN)_V1_1.14.10 Build 20260825 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| support.omadanetworks.com/en/download/software/omada-controller | f23511db-6c3e-4e32-a477-6aa17d310630 | support.omadanetworks.com | |
| support.omadanetworks.com/us/document/133567 | f23511db-6c3e-4e32-a477-6aa17d310630 | support.omadanetworks.com | |
| support.omadanetworks.com/us/download/software/omada-controller | f23511db-6c3e-4e32-a477-6aa17d310630 | support.omadanetworks.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Joshua Chan, GitHub: https://github.com/popcorn94, Twitter: popc0rn94 (en)
CNA: eslam moneer (tohtmosiii) (en)
There are currently no legacy QID mappings associated with this CVE.