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Omada Controller CVE-2026-81531

| EUVDEUVD-2026-73160 MEDIUM
Information Exposure (CWE-200)
2026-09-08 f23511db-6c3e-4e32-a477-6aa17d310630 GHSA-2pv5-9q5x-x59w
6.9
CVSS 4.0 · Vendor: f23511db-6c3e-4e32-a477-6aa17d310630
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Severity by source

Vendor (f23511db-6c3e-4e32-a477-6aa17d310630) PRIMARY
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/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
vuln.today AI
5.3 MEDIUM

Network-reachable unauthenticated endpoint with no interaction needed; only partial account metadata disclosed, so C:L with no integrity or availability impact.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (f23511db-6c3e-4e32-a477-6aa17d310630).

CVSS VectorVendor: f23511db-6c3e-4e32-a477-6aa17d310630

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Patch available
Sep 08, 2026 - 18:04 EUVD
Metadata Corrected
Sep 08, 2026 - 17:40 vuln.today
tag: TP-Link added
Analysis Generated
Sep 08, 2026 - 17:31 vuln.today

DescriptionCVE.org

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.

AnalysisAI

Unauthenticated information disclosure in TP-Link Omada Controller exposes an initialization API endpoint that remains reachable after setup completes, leaking account-related data to any remote unauthenticated user. The endpoint was designed for one-time use during initial controller configuration but lacks post-initialization access controls, allowing attackers to query it freely. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation No special configuration is required beyond a reachable Omada Controller instance - the vulnerable endpoint is exposed by default once initialization completes, and no authentication is checked. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 6.9 (Medium) accurately reflects the bounded real-world impact: low confidentiality exposure with no integrity or availability consequence. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade Omada Controller to the patched version identified in the vendor security advisory at https://support.omadanetworks.com/us/document/133567/. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-81531 vulnerability details – vuln.today

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