CVE-2026-41446: WattBox 800 & 820 Series < 2.10.0.0 RCE via Diagnostic Endpoints
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Snap One WattBox 800 and 820 seriesto a version that resolves this vulnerability.Fixed in 2.10.0.0 - Compensating control
Restrict network access to the undisclosed diagnostic HTTP endpoints on Snap One WattBox 800/820 devices so they are not reachable from unauthorized networks; only allow access from trusted management sources.
- Operational
Reduce exposure of the device MAC address and service tag printed in plaintext on the physical device label, since they are used for authentication to the diagnostic HTTP endpoints (e.g., cover/obscure the label in environments where physical access could be obtained).
Event History
Frequently Asked Questions
What is the severity of CVE-2026-41446?
CVE-2026-41446 is considered to have a high severity due to the potential for remote code execution.
How do I fix CVE-2026-41446?
To remediate CVE-2026-41446, upgrade the firmware of your Snap One WattBox 800 or 820 Series devices to version 2.10.0.0 or later.
What systems are affected by CVE-2026-41446?
CVE-2026-41446 affects Snap One WattBox 800 and 820 Series devices running firmware versions prior to 2.10.0.0.
What kind of exploit is associated with CVE-2026-41446?
CVE-2026-41446 involves remote code execution through undisclosed diagnostic HTTP endpoints.
Is authentication necessary for exploiting CVE-2026-41446?
No, CVE-2026-41446 requires only the device MAC address and service tag for authentication, making it easier for attackers to exploit.