CVE-2026-78577

Unauthenticated Onboarding Scan Information Disclosure in TP-Link Tapo C120 & C200

MEDIUM
5.3
CVSS Score
Published: October 1, 2026 at 05:41 PM UTC
Updated: October 1, 2026 at 08:36 PM UTC
2 products affected across 1 vendorTapo C200Tapo C120

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < V1_1.9.4 Build 260813 Rel.79754n
Affected range stops below V1_1.9.4 Build 260813 Rel.79754n, so it looks safe — our inference, not a vendor statement
v < V5_1.4.6 Build 260709 Rel.27675n
Affected range stops below V5_1.4.6 Build 260709 Rel.27675n, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMTPLink
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-306

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