{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-105821", "assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "state": "PUBLISHED", "assignerShortName": "TPLink", "dateReserved": "2026-10-05T21:36:14.670Z", "datePublished": "2026-11-03T19:41:03.841Z", "dateUpdated": "2026-11-03T19:41:03.841Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "shortName": "TPLink", "dateUpdated": "2026-11-03T19:41:03.841Z"}, "title": "Broken Access Control Leading to Cross-Device Token Issuance in Tapo Cloud MQTT Proxy", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-862", "description": "CWE-862 Missing Authorization", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-1", "descriptions": [{"lang": "en", "value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}], "affected": [{"vendor": "TP-Link Systems Inc.", "product": "Tapo Cloud Service", "modules": ["MQTT Proxy"], "versions": [{"status": "affected", "version": "0", "lessThan": "N/A", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The Tapo\nCloud MQTT broker contains a broken access control vulnerability in a proxy\ntopic used by authenticated Tapo devices to request service tokens. The broker\ndoes not verify that the device ID supplied in a proxy request belongs to the\nauthenticated device. An attacker who owns a Tapo device and knows another\ndevice's ID may obtain a device token scoped to the target device and use it to\nupload attacker-controlled content to the target user's Tapo Cloud storage. The\ncontent may then be presented in the Tapo app as a legitimate event.\n\n\n\n\n\nSuccessful\nexploitation may allow an attacker to upload attacker-controlled content that\nis presented to a target user as a legitimate Tapo event, retrieve internal\nservice information through crafted proxy requests, or abuse Tapo Cloud\noutbound request capability in activity that could affect service\navailability.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>The Tapo\nCloud MQTT broker contains a broken access control vulnerability in a proxy\ntopic used by authenticated Tapo devices to request service tokens. The broker\ndoes not verify that the device ID supplied in a proxy request belongs to the\nauthenticated device. An attacker who owns a Tapo device and knows another\ndevice's ID may obtain a device token scoped to the target device and use it to\nupload attacker-controlled content to the target user's Tapo Cloud storage. The\ncontent may then be presented in the Tapo app as a legitimate event.</p>\n\n<p>Successful\nexploitation may allow an attacker to upload attacker-controlled content that\nis presented to a target user as a legitimate Tapo event, retrieve internal\nservice information through crafted proxy requests, or abuse Tapo Cloud\noutbound request capability in activity that could affect service\navailability.&nbsp;</p>"}]}], "references": [{"url": "https://www.tp-link.com/us/support/faq/5370/", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N"}}], "credits": [{"lang": "en", "value": "davidsclee (davidleesecurity.co.uk)", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "modules": ["MQTT Proxy"], "product": "Tapo Cloud Service", "vendor": "TP-Link Systems Inc.", "versions": [{"lessThan": "N/A", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "f23511db-6c3e-4e32-a477-6aa17d310630"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Tapo\nCloud MQTT broker contains a broken access control vulnerability in a proxy\ntopic used by authenticated Tapo devices to request service tokens. The broker\ndoes not verify that the device ID supplied in a proxy request belongs to the\nauthenticated device. An attacker who owns a Tapo device and knows another\ndevice's ID may obtain a device token scoped to the target device and use it to\nupload attacker-controlled content to the target user's Tapo Cloud storage. The\ncontent may then be presented in the Tapo app as a legitimate event.\n\n\n\n\n\nSuccessful\nexploitation may allow an attacker to upload attacker-controlled content that\nis presented to a target user as a legitimate Tapo event, retrieve internal\nservice information through crafted proxy requests, or abuse Tapo Cloud\noutbound request capability in activity that could affect service\navailability."}], "id": "CVE-2026-105821", "lastModified": "2026-11-03T20:18:05.987", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.3, "baseSeverity": "HIGH", "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:P/PR:N/UI:N/VC:N/VI:H/VA:H/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": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary"}]}, "published": "2026-11-03T20:18:05.987", "references": [{"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "url": "https://www.tp-link.com/us/support/faq/5370/"}], "sourceIdentifier": "f23511db-6c3e-4e32-a477-6aa17d310630", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary"}]}

{}

{"created": "2026-11-03T20:30:12.625540+00:00", "updated": "2026-11-03T20:30:12.625546+00:00", "vendors": []}