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CVE-2026-78577

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

CVSS 4.0 5.3 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-78577

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-78577

Published

Tapo C200 v5

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "TP-Link Systems Inc.",
                    "product": "Tapo C200 v5",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "V5_1.4.6 Build 260709 Rel.27675n",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Tapo C120 v1

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "TP-Link Systems Inc.",
                    "product": "Tapo C120 v1",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "V1_1.9.4 Build 260813 Rel.79754n",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON