Snap One WattBox 800/WattBox 820 up to 2.10.0.0 HTTP Endpoint backdoor

Summaryinfo

A vulnerability classified as critical was found in Snap One WattBox 800 and WattBox 820 up to 2.10.0.0. This impacts an unknown function of the component HTTP Endpoint. Executing a manipulation can lead to backdoor. The identification of this vulnerability is CVE-2026-41446. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Snap One WattBox 800 and WattBox 820 up to 2.10.0.0 and classified as very critical. This vulnerability affects an unknown function of the component HTTP Endpoint. The manipulation with an unknown input leads to a backdoor vulnerability. The CWE definition for the vulnerability is CWE-912. The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Snap One WattBox 800 and 820 series firmware versions prior to 2.10.0.0 contain undisclosed diagnostic HTTP endpoints that require only the device MAC address and service tag for authentication, both of which are printed in plaintext on the physical device label. Attackers with access to the device label or documentation containing these values can authenticate to the several endpoints and execute arbitrary commands as root on the device.

The advisory is available at help.snapone.com. This vulnerability was named CVE-2026-41446 since 04/20/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/29/2026). This vulnerability is assigned to T1588.001 by the MITRE ATT&CK project.

Upgrading to version 2.10.0.0 eliminates this vulnerability.

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Productinfo

Vendor

• Snap One

Name

• WattBox 800
• WattBox 820

Version

• 2.10.0

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CPE 2.2info

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