Vulnerability-Lookup

CVE-2026-81531 (GCVE-0-2026-81531)

Vulnerability from cvelistv5 – Published: 2026-09-08 16:53 – Updated: 2026-09-08 17:21

Title

Unauthenticated Account Information Disclosure in Multiple Omada Controllers

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.

Severity

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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 17:21 UTC

CWE

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

Assigner

TPLink mitre root

References

3 references

URL	Tags
https://support.omadanetworks.com/us/download/sof…	patch
https://support.omadanetworks.com/us/document/133567/	vendor-advisory
https://support.omadanetworks.com/en/download/sof…	patch

Impacted products

8 products

Vendor	Product	Version	CPE status
TP-Link System Inc.	Omada Software Controller	Affected: 0 , < 6.3.0.44 (custom)	guessed
TP-Link Systems Inc.	OC200 V1	Affected: 0 , < (UN)_V1_1.42.10 Build 20260825 (custom)	guessed
TP Link Systems Inc.	OC200 v2	Affected: 0 , < (UN)_V2_2.27.10 Build 20260825 (custom)	guessed
TP-Link Systems Inc	OC200 v3	Affected: 0 , < (UN)_V3_3.4.10 Build 20260825 (custom)	guessed
TP-Link Systems Inc.	OC220 v1	Affected: 0 , < (UN)_V1_1.7.10 Build 20260825 (custom)	guessed
TP-Link Systems Inc	OC220 v2	Affected: 0 , < (UN)_V2_2.6.10 Build 20260825 (custom)	guessed
TP-Link Systems Inc.	OC300 v1	Affected: 0 , < (UN)_V1_1.36.10 Build 20260825 (custom)	guessed
TP-Link Systems Inc.	OC400 v1	Affected: 0 , < (UN)_V1_1.14.10 Build 20260825 (custom)	guessed

Credits

Joshua Chan, GitHub: https://github.com/popcorn94, Twitter: popc0rn94

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-81531

Vulnerability from fkie_nvd - Published: 2026-09-08 17:18 - Updated: 2026-09-08 19:15

Severity

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

Summary

References

	URL	Tags
	f23511db-6c3e-4e32-a477-6aa17d310630	https://support.omadanetworks.com/en/download/software/omada-controller/
	f23511db-6c3e-4e32-a477-6aa17d310630	https://support.omadanetworks.com/us/document/133567/
	f23511db-6c3e-4e32-a477-6aa17d310630	https://support.omadanetworks.com/us/download/software/omada-controller/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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              "lessThan": "(UN)_V3_3.4.10 Build 20260825",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "OC220 v1",
          "vendor": "TP-Link Systems Inc.",
          "versions": [
            {
              "lessThan": "(UN)_V1_1.7.10 Build 20260825",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "OC220 v2",
          "vendor": "TP-Link Systems Inc",
          "versions": [
            {
              "lessThan": "(UN)_V2_2.6.10 Build 20260825",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "OC300 v1",
          "vendor": "TP-Link Systems Inc.",
          "versions": [
            {
              "lessThan": "(UN)_V1_1.36.10 Build 20260825",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "OC400 v1",
          "vendor": "TP-Link Systems Inc.",
          "versions": [
            {
              "lessThan": "(UN)_V1_1.14.10 Build 20260825",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "f23511db-6c3e-4e32-a477-6aa17d310630"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An information\ndisclosure vulnerability has been identified in Omada Controller.\u00a0 An API endpoint intended for Controller initialization\nremains accessible after completion and may disclose account-related\ninformation to unauthenticated remote users.\u00a0\n\n\n\n\n\n\nSuccessful\nexploitation may allow an attacker to remote query the affected endpoint that\nmay facilitate user enumeration and subsequent attacks targeting administrative\naccounts."
    }
  ],
  "id": "CVE-2026-81531",
  "lastModified": "2026-09-08T19:15:18.627",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.9,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-81531",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-08T17:21:39.911958Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-08T17:18:32.833",
  "references": [
    {
      "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
      "url": "https://support.omadanetworks.com/en/download/software/omada-controller/"
    },
    {
      "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
      "url": "https://support.omadanetworks.com/us/document/133567/"
    },
    {
      "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
      "url": "https://support.omadanetworks.com/us/download/software/omada-controller/"
    }
  ],
  "sourceIdentifier": "f23511db-6c3e-4e32-a477-6aa17d310630",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
      "type": "Secondary"
    }
  ]
}

GHSA-2PV5-9Q5X-X59W

Vulnerability from github – Published: 2026-09-08 18:31 – Updated: 2026-09-08 18:31

Details

Successful exploitation may allow an attacker to remote query the affected endpoint that may facilitate user enumeration and subsequent attacks targeting administrative accounts.

Severity

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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-81531"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-08T17:18:32Z",
    "severity": "MODERATE"
  },
  "details": "An information\ndisclosure vulnerability has been identified in Omada Controller.\u00a0 An API endpoint intended for Controller initialization\nremains accessible after completion and may disclose account-related\ninformation to unauthenticated remote users.\u00a0\n\n\n\n\n\n\nSuccessful\nexploitation may allow an attacker to remote query the affected endpoint that\nmay facilitate user enumeration and subsequent attacks targeting administrative\naccounts.",
  "id": "GHSA-2pv5-9q5x-x59w",
  "modified": "2026-09-08T18:31:56Z",
  "published": "2026-09-08T18:31:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81531"
    },
    {
      "type": "WEB",
      "url": "https://support.omadanetworks.com/en/download/software/omada-controller"
    },
    {
      "type": "WEB",
      "url": "https://support.omadanetworks.com/us/document/133567"
    },
    {
      "type": "WEB",
      "url": "https://support.omadanetworks.com/us/download/software/omada-controller"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-81531 (GCVE-0-2026-81531)

FKIE_CVE-2026-81531

GHSA-2PV5-9Q5X-X59W

Tags

Sightings

Nomenclature