CVE-2026-78578
Unauthenticated do Method Onboarding Connect Allows Wi‑Fi Reconfiguration Denial of Service Vulnerability in TP-Link Tapo C120 & C200
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-306 |
| Vendor | tp-link systems inc. |
| Product | tapo c200 v5 |
| Published | Oct 1, 2026 |
| Last Updated | Oct 1, 2026 |
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Affected Versions
TP-Link Systems Inc. / Tapo C200 v5
0 < V5_1.4.6 Build 260709 Rel.27675n
TP-Link Systems Inc. / Tapo C120 v1
0 < V1_1.9.4 Build 260813 Rel.79754n
References
tp-link.com: https://www.tp-link.com/us/support/download/tapo-c200/v5/#Firmware-Release-Notes tp-link.com: https://www.tp-link.com/en/support/download/tapo-c200/v5/#Firmware-Release-Notes tp-link.com: https://www.tp-link.com/us/support/download/tapo-c120/v1.26/#Firmware-Release-Notes tp-link.com: https://www.tp-link.com/en/support/download/tapo-c120/v1.26/#Firmware-Release-Notes tp-link.com: https://www.tp-link.com/us/support/faq/5321/
Credits
Thai Do (Lio) and Khoi Tran (KayTii) from OPSWAT