CVE-2026-15315

A weakness in the camera’s sign-in process lets a nearby person reuse certain login information to enter as the administrator without knowing the password. It is like someone reusing a previously accepted visitor pass to gain control of the security-room controls, including turning a camera’s service off temporarily.

This matters to you if you run TP-Link Tapo C120 v1 or C200 v5 cameras. An attacker does not need a camera login or anyone’s help, but must be connected to the same local network as the camera.

A person who gets onto your local network can take administrative control of an affected camera without a password. Treat this as urgent because the camera is reachable in its default setup and an attacker can change its settings or interrupt its service.

Confirm the exact camera hardware version and installed firmware in the Tapo app or device administration settings. Upgrade Tapo C120 v1 to 1.9.3 Build 260521 or later and Tapo C200 v5 to V5_1.4.6 Build 260709 Rel.27675n or later; the vendor also lists 1.9.3 for Tapo C120 firmware and 1.4.6 for Tapo C200 firmware. If an update must wait, place cameras on a dedicated private network, block guest-network access to that network, and remove unknown devices from it. After updating, review camera administrator settings and recent configuration changes, then confirm that cameras remain online and recording normally. CISA has not added this CVE to KEV, so no CISA remediation due date is listed.

CVSS 8.8 High (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). CWE-287 improper authentication: an adjacent-network attacker can replay device_confirm-related challenge parameters to bypass login verification and obtain administrative session access. No CISA KEV listing, dated exploitation claim, public exploit code, or reported incident was identified. EPSS is 0.3% (22nd percentile) with a flat trend; this is predictive only. Press attention is rising due to a roundup associated with Black Axe, not a confirmed exploitation report.