CVE-2026-78577

Medium

Description

Tapo C120 v1 and C200 V5 contain a vulnerability in the HTTPS onboarding scan function due to missing authentication. After initial setup, an unauthenticated attacker on the same local network can invoke the scan action and retrieve nearby wireless access-point metadata, including SSIDs, BSSIDs, authentication and encryption modes, and signal-strength information. Successful exploitation may disclose information about the wireless environment surrounding the camera, allowing an attacker to learn elements of the local wireless topology.

SeverityMedium

CVSS5.3

Exploit probability—

ProductTapo C200 v5

PublishedOct 1, 2026

First seenOct 1, 2026

Weakness typeCWE-306Missing authentication for critical function

How to fix

Update

TP-Link Systems Inc. Tapo C200 v5V5_1.4.6 Build 260709 Rel.27675n or later
TP-Link Systems Inc. Tapo C120 v1V1_1.9.4 Build 260813 Rel.79754n or later

Patches

Vendor advisories

tp-link.com/us/support/faq/5321/

Affected products

Product	Affected versions	Fixed in
TP-Link Systems Inc. Tapo C200 v5	v < V5_1.4.6 Build 260709 Rel.27675n	V5_1.4.6 Build 260709 Rel.27675n
TP-Link Systems Inc. Tapo C120 v1	v < V1_1.9.4 Build 260813 Rel.79754n	V1_1.9.4 Build 260813 Rel.79754n

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