CVE-2026-41446

WattBox 800 & 820 Series < 2.10.0.0 RCE via Diagnostic Endpoints

Published Apr 28, 2026 CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
First Time appeared Snapone
Snapone wattbox 800
Snapone wattbox 820
Vendors & Products Snapone
Snapone wattbox 800
Snapone wattbox 820
Type Values Removed Values Added
Description 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.
Title WattBox 800 & 820 Series < 2.10.0.0 RCE via Diagnostic Endpoints
Weaknesses CWE-798
CWE-912
References
Metrics cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
May 14, 2026, 2:09 AM
Reserved
Apr 20, 2026, 4:07 PM
Status
Awaiting Analysis
Published
Apr 28, 2026, 10:16 PM
Modified
Jul 24, 2026, 9:10 PM