CVE-2026-15315

Tapo C120 v1 and C200 v5

contain an improper authentication vulnerability within the login

authentication verification module. An attacker on the local network can

exploit weaknesses in challenge parameter validation to bypass normal

authentication controls and obtain administrative session tokens.

Successful

exploitation may allow an attacker to subsequently execute privileged

management actions, enable unauthorized administrative access and temporary

disruption of device services, resulting in a denial-of-service (DoS)

condition.