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Fencer Vulns
medium 6.9

CVE-2026-84941 json

Omada Controller XML External Entity (XXE) Injection in SAML IdP Metadata Parsing Leading to Arbitrary Local File Read

published 2026-09-10 59 d ago modified 2026-09-11 58 d ago also EUVD-2026-75890

cvss
6.9
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits
0
none known

Summary

An information disclosure vulnerability in the SAML Single Sign-On (SSO) functionality of Omada Controller allows an authenticated user with SAML configuration privileges to access sensitive information due to insufficient validation of user-supplied SAML metadata. Successful exploitation could result in unauthorized disclosure of sensitive information.

Patch / fix

  • TP-Link Systems Inc. Omada Software Controller (Windows) 6.2.14.11
  • TP-Link Systems Inc. Omada Software Controller (Linux) 6.2.14.11
  • TP-Link Systems Inc. OC2000 v1 1.41.11 Build 20260711
  • TP-Link Systems Inc. OC2000 v2 2.26.11 Build 20260711
  • TP-Link Systems Inc. OC200 v3 3.3.11 Build 20260711
  • TP-Link Systems Inc. OC220 v1 1.6.11 Build 20260711
  • TP-Link Systems Inc. OC220 v2 2.5.11 Build 20260711
  • TP-Link Systems Inc. OC300 v1 1.35.11 Build 20260711
  • TP-Link Systems Inc. OC400 v1 1.13.11 Build 20260711

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
58 d ago

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 41% 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:H/UI:N/VC:H/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:H/UI:N/VC:H/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 Systems Inc. Omada Software Controller (Windows)
  • TP-Link Systems Inc. Omada Software Controller (Linux)
  • TP-Link Systems Inc. OC2000 v1
  • TP-Link Systems Inc. OC2000 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-611 Improper Restriction of XML External Entity Reference

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.