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CVE-2026-81531

MEDIUMCVSS 6.9/10EPSS 0.38%

Last modified

CVE-2026-81531 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. 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.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 4.0
6.9/10

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 Probability
0.38%

32.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
TP-Link System Inc.Omada Software Controller< 6.3.0.44
TP-Link Systems Inc.OC200 V1< (UN)_V1_1.42.10 Build 20260825
TP Link Systems Inc.OC200 v2< (UN)_V2_2.27.10 Build 20260825
TP-Link Systems IncOC200 v3< (UN)_V3_3.4.10 Build 20260825
TP-Link Systems Inc.OC220 v1< (UN)_V1_1.7.10 Build 20260825
TP-Link Systems IncOC220 v2< (UN)_V2_2.6.10 Build 20260825
TP-Link Systems Inc.OC300 v1< (UN)_V1_1.36.10 Build 20260825
TP-Link Systems Inc.OC400 v1< (UN)_V1_1.14.10 Build 20260825

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-81531?
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.
How severe is CVE-2026-81531?
CVE-2026-81531 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.
How do I fix CVE-2026-81531?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST