{"schemaVersion":3,"id":"CVE-2026-78578","aliases":[],"status":"published","duplicateOf":null,"title":"Unauthenticated do Method Onboarding Connect Allows Wi‑Fi Reconfiguration Denial of Service Vulnerability in TP-Link Tapo C120 & C200","description":"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.","dates":{"published":"2026-10-01T17:42:05.535Z","modified":"2026-10-01T18:08:30.649Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.1,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"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","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":7.1,"severity":"high","vector":"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","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":7.1,"severity":"high","vector":"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","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00249,"percentile":0.15246,"severity":"low","asOf":"2026-10-22T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-02T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00249,"percentile":0.15246}],"last30":[{"date":"2026-10-02T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00249,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00249,"percentile":0.15246}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-306","name":"Missing Authentication for Critical Function","description":"The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/306.html"}],"affected":[{"vendor":"tp-link systems inc.","product":"tapo c120 v1","name":"Tapo C120 v1","label":"tapo c120 v1","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< V1_1.9.4 Build 260813 Rel.79754n","noFixRecorded":false,"fixedIn":null}],"versionsText":"< V1_1.9.4 Build 260813 Rel.79754n","eol":null,"hubHref":"/vendor/tp-link_systems_inc/tapo_c120_v1"},{"vendor":"tp-link systems inc.","product":"tapo c200 v5","name":"Tapo C200 v5","label":"tapo c200 v5","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< V5_1.4.6 Build 260709 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Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-01T17:42:05.535Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-01T18:08:30.649Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":28,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T21:49:44.618Z","stale":false,"partial":false}}