Tapo C120 v1 and C200 v5\ndo not enforce authentication for do method HTTPS onboarding connect actions\nafter initial setup. An unauthenticated adjacent\nattacker can submit unauthorized wireless configuration parameters, causing the\ncamera to attempt connection to a different network.
\n\nSuccessful\nexploitation disconnects the camera from its intended wireless network, making\nit unreachable on its management address, resulting in a denial-of-service\ncondition.
"}],"value":"Tapo C120 v1 and C200 v5\ndo not enforce authentication for do method HTTPS onboarding connect actions\nafter initial setup. An unauthenticated adjacent\nattacker can submit unauthorized wireless configuration parameters, causing the\ncamera to attempt connection to a different network.\n\n\n\n\n\nSuccessful\nexploitation disconnects the camera from its intended wireless network, making\nit unreachable on its management address, resulting in a denial-of-service\ncondition."}],"impacts":[{"capecId":"CAPEC-1","descriptions":[{"lang":"en","value":"CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":7.1,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","description":"CWE-306 Missing authentication for critical function","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-01T17:42:05.535Z","orgId":"f23511db-6c3e-4e32-a477-6aa17d310630","shortName":"TPLink"},"references":[{"tags":["patch"],"url":"https://www.tp-link.com/us/support/download/tapo-c200/v5/#Firmware-Release-Notes"},{"tags":["patch"],"url":"https://www.tp-link.com/en/support/download/tapo-c200/v5/#Firmware-Release-Notes"},{"tags":["patch"],"url":"https://www.tp-link.com/us/support/download/tapo-c120/v1.26/#Firmware-Release-Notes"},{"tags":["patch"],"url":"https://www.tp-link.com/en/support/download/tapo-c120/v1.26/#Firmware-Release-Notes"},{"tags":["vendor-advisory"],"url":"https://www.tp-link.com/us/support/faq/5321/"}],"source":{"discovery":"UNKNOWN"},"title":"Unauthenticated do Method Onboarding Connect Allows Wi‑Fi Reconfiguration Denial of Service Vulnerability in TP-Link Tapo C120 & C200","x_generator":{"engine":"Vulnogram 1.0.5"}}},"cveMetadata":{"assignerOrgId":"f23511db-6c3e-4e32-a477-6aa17d310630","assignerShortName":"TPLink","cveId":"CVE-2026-78578","datePublished":"2026-10-01T17:42:05.535Z","dateReserved":"2026-08-24T20:46:19.845Z","dateUpdated":"2026-10-01T18:08:30.649Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-01 18:17:27","lastModifiedDate":"2026-10-01 20:36:38","problem_types":["CWE-306","CWE-306 CWE-306 Missing authentication for critical function"],"metrics":{"cvssMetricV40":[{"source":"f23511db-6c3e-4e32-a477-6aa17d310630","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"ADJACENT","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-01T18:08:21.543786Z","id":"CVE-2026-78578","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"78578","Ordinal":"1","Title":"Unauthenticated do Method Onboarding Connect Allows Wi‑Fi Reconf","CVE":"CVE-2026-78578","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"78578","Ordinal":"1","NoteData":"Tapo C120 v1 and C200 v5\ndo not enforce authentication for do method HTTPS onboarding connect actions\nafter initial setup. An unauthenticated adjacent\nattacker can submit unauthorized wireless configuration parameters, causing the\ncamera to attempt connection to a different network.\n\n\n\n\n\nSuccessful\nexploitation disconnects the camera from its intended wireless network, making\nit unreachable on its management address, resulting in a denial-of-service\ncondition.","Type":"Description","Title":"Unauthenticated do Method Onboarding Connect Allows Wi‑Fi Reconf"}]}}}