CVE-2026-78578

Tapo C120 v1 and C200 v5 do not enforce authentication for do method HTTPS onboarding connect actions after initial setup. An unauthenticated adjacent attacker can submit unauthorized wireless configuration parameters, causing the camera to attempt connection to a different network. Successful exploitation disconnects the camera from its intended wireless network, making it unreachable on its management address, resulting in a denial-of-service condition.

CVSS

No CVSS.

References

Link	Resource
https://www.tp-link.com/en/support/download/tapo-c120/v1.26/#Firmware-Release-Notes
https://www.tp-link.com/en/support/download/tapo-c200/v5/#Firmware-Release-Notes
https://www.tp-link.com/us/support/download/tapo-c120/v1.26/#Firmware-Release-Notes
https://www.tp-link.com/us/support/download/tapo-c200/v5/#Firmware-Release-Notes
https://www.tp-link.com/us/support/faq/5321/

Configurations

No configuration.

History

01 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-01 18:17

Updated : 2026-10-01 20:36

NVD link : CVE-2026-78578

Mitre link : CVE-2026-78578

CVE.ORG link : CVE-2026-78578

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

{"id": "CVE-2026-78578", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-78578", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-01T18:08:21.543786Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 7.1, "Automatable": "NOT_DEFINED", "attackVector": "ADJACENT", "baseSeverity": "HIGH", "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/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "affectedData": [{"vendor": "TP-Link Systems Inc.", "product": "Tapo C200 v5", "versions": [{"status": "affected", "version": "0", "lessThan": "V5_1.4.6 Build 260709 Rel.27675n", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "TP-Link Systems Inc.", "product": "Tapo C120 v1", "versions": [{"status": "affected", "version": "0", "lessThan": "V1_1.9.4 Build 260813 Rel.79754n", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-10-01T18:17:27.997", "references": [{"url": "https://www.tp-link.com/en/support/download/tapo-c120/v1.26/#Firmware-Release-Notes", "source": "f23511db-6c3e-4e32-a477-6aa17d310630"}, {"url": "https://www.tp-link.com/en/support/download/tapo-c200/v5/#Firmware-Release-Notes", "source": "f23511db-6c3e-4e32-a477-6aa17d310630"}, {"url": "https://www.tp-link.com/us/support/download/tapo-c120/v1.26/#Firmware-Release-Notes", "source": "f23511db-6c3e-4e32-a477-6aa17d310630"}, {"url": "https://www.tp-link.com/us/support/download/tapo-c200/v5/#Firmware-Release-Notes", "source": "f23511db-6c3e-4e32-a477-6aa17d310630"}, {"url": "https://www.tp-link.com/us/support/faq/5321/", "source": "f23511db-6c3e-4e32-a477-6aa17d310630"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "description": [{"lang": "en", "value": "CWE-306"}]}], "descriptions": [{"lang": "en", "value": "Tapo C120 v1 and C200 v5\ndo not enforce authentication for do method HTTPS onboarding connect actions\nafter initial setup.\u00a0 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."}], "lastModified": "2026-10-01T20:36:38.330", "sourceIdentifier": "f23511db-6c3e-4e32-a477-6aa17d310630"}