CVE-2026-105821
Received
Received - Intake
Broken Access Control in Tapo Cloud MQTT Broker
Vulnerability report for CVE-2026-105821, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-11-03
Last updated on: 2026-11-03
Assigner: TPLink
Description
Description
The Tapo
Cloud MQTT broker contains a broken access control vulnerability in a proxy
topic used by authenticated Tapo devices to request service tokens. The broker
does not verify that the device ID supplied in a proxy request belongs to the
authenticated device. An attacker who owns a Tapo device and knows another
device's ID may obtain a device token scoped to the target device and use it to
upload attacker-controlled content to the target user's Tapo Cloud storage. The
content may then be presented in the Tapo app as a legitimate event.
Successful
exploitation may allow an attacker to upload attacker-controlled content that
is presented to a target user as a legitimate Tapo event, retrieve internal
service information through crafted proxy requests, or abuse Tapo Cloud
outbound request capability in activity that could affect service
availability.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| TP-Link Systems Inc. | Tapo Cloud Service | 0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-862 | The product does not perform an authorization check when an actor attempts to access a resource or perform an action. |
