{"id":"CVE-2026-78578","aliases":["EUVD-2026-90982","GHSA-5hx8-fmw3-r64v"],"status":"published","title":"Unauthenticated do Method Onboarding Connect Allows Wi‑Fi Reconfiguration Denial of Service Vulnerability in TP-Link Tapo C120 \u0026 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.","severity":{"version":"4.0","score":7.1,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00273,"percentile":0.1987,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2026-10-01T17:42:05Z","modified":"2026-10-01T20:36:38Z","products":[{"vendor":"tp-link systems inc","product":"tapo c120 v1"},{"vendor":"tp-link systems inc.","product":"tapo c120 v1"},{"vendor":"tp-link systems inc.","product":"tapo c200 v5"}],"references":[{"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":["patch"]},{"url":"https://www.tp-link.com/us/support/faq/5321/","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78578"},{"url":"https://www.tp-link.com/us/support/faq/5321"},{"url":"https://github.com/advisories/GHSA-5hx8-fmw3-r64v"}],"sources":{"cve":[{"id":"CVE-2026-78578","title":"Unauthenticated do Method Onboarding Connect Allows Wi‑Fi Reconfiguration Denial of Service Vulnerability in TP-Link Tapo C120 \u0026 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.","status":"published","published":"2026-10-01T17:42:05.535Z","modified":"2026-10-01T18:08:30.649Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high","assessor":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T13:34:59.78118Z"}],"euvd":[{"id":"EUVD-2026-90982","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.","status":"published","published":"2026-10-01T17:42:05Z","modified":"2026-10-01T18:08:30Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high"}],"updated_at":"2026-11-02T17:27:44.322377Z"}],"ghsa":[{"id":"GHSA-5hx8-fmw3-r64v","title":"Tapo C120 v1 and C200 v5\ndo not enforce authentication for do method HTTPS onboarding connect...","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.","status":"published","published":"2026-10-01T18:32:48Z","modified":"2026-10-01T18:32:57Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:12:41.196374Z"}],"nvd":[{"id":"CVE-2026-78578","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.","status":"published","published":"2026-10-01T18:17:27.997Z","modified":"2026-10-01T20:36:38.33Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high","assessor":"secondary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:12:53.41762Z"}]}}