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Fencer Vulns
medium 6.9

CVE-2026-81531 json

Unauthenticated Account Information Disclosure in Multiple Omada Controllers

published 2026-09-08 2 mo ago modified 2026-09-21 48 d ago also EUVD-2026-73160

cvss
6.9
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

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.

Patch / fix

  • TP-Link System Inc. Omada Software Controller 6.3.0.45
  • 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 Inc OC200 v3 (UN)_V3_3.4.10 Build 20260825
  • TP-Link Systems Inc. OC220 v1 (UN)_V1_1.7.10 Build 20260825
  • TP-Link Systems Inc OC220 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

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 6.9 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
CNA 4.0 6.9 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

Affected products

  • TP-Link System Inc. Omada Software Controller
  • TP-Link Systems Inc. OC200 V1
  • TP Link Systems Inc. OC200 v2
  • TP-Link Systems Inc OC200 v3
  • TP-Link Systems Inc. OC220 v1
  • TP-Link Systems Inc OC220 v2
  • TP-Link Systems Inc. OC300 v1
  • TP-Link Systems Inc. OC400 v1

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.