CVE-2026-78578: TP-Link Systems Inc Tapo c120 v1

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• TP-Link Systems Inc Tapo c120 v1
• TP-Link Systems Inc Tapo c200 v5

Published 2026-10-01. Last modified 2026-10-01.