CVE-2026-15315

TP-Link Tapo C120 (v1) and Tapo C200 (v5) cameras contain an improper authentication vulnerability (CWE-287) in the login authentication verification module, rated high severity at CVSS 4.0 8.7. An attacker already present on the same local network as the camera (adjacent-network attack vector) can exploit weak validation of challenge parameters during the login handshake to bypass normal authentication and obtain administrative session tokens. With these tokens, the attacker can perform privileged management actions, gain unauthorized administrative access to the camera, and temporarily disrupt device services, causing a denial-of-service condition. All consumer and small-business deployments of these specific camera hardware/firmware versions are affected. A public proof-of-concept exists on GitHub, but EPSS is low (0.3% in 30 days) and the flaw is not in the CISA KEV catalog, so exploitation in the wild is not currently observed.

What to do: Check the hardware/firmware version of any Tapo C120 or C200 units in your environment (Tapo app > device settings > firmware) and apply the latest firmware TP-Link publishes for these models as soon as a fix is available, monitoring TP-Link's security advisory page. Because exploitation requires local network access, place cameras on a segregated IoT/guest VLAN that cannot reach trusted internal segments, and verify camera accounts, bindings, and recorded footage for signs of unauthorized administrative access.