CVE-2025-15574

Insecure Credential Generation for Solax Power Pocket WiFi models MQTT Cloud Connection

Published Feb 12, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
When connecting to the Solax Cloud MQTT server the username is the "registration number", which is the 10 character string printed on the SolaX Power Pocket device / the QR code on the device. The password is derived from the "registration number" using a proprietary XOR/transposition algorithm. Attackers with the knowledge of the registration numbers can connect to the MQTT server and impersonate the dongle / inverters.

Remediation

Vendor Solution

The vendor provides patches for the affected Pocket models which can be obtained throw their customer's Solax Cloud account and using the Pocket firmware upgrade function there. As of February 10, 2026, the firmware versions for each affected Pocket model are as follows according to the vendor: 1. Pocket WiFi 3.0 – (3.022.03) 2. Pocket WiFi+LAN – (1.009.02) 3. Pocket WiFi+4GM – (1.005.05) 4. Pocket WiFi+LAN 2.0 – (006.06) 5. Pocket WiFi 4.0 – (003.03) The vendor provided the following further information regarding EV Charger and Adapter Box: 1. EV Charger: The WiFi module firmware supports digital signature, but only one-way authentication is implemented. 2. Adapter Box: The WiFi module firmware supports two-way authentication and digital signature.

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

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

Type Values Removed Values Added
First Time appeared Solax
Solax pocket Wifi 3
Solax Power
Solax Power pocket Wifi+4gm
Solax Power pocket Wifi+lan
Solax Power pocket Wifi+lan 2.0
Solax Power pocket Wifi 4.0
Vendors & Products Solax
Solax pocket Wifi 3
Solax Power
Solax Power pocket Wifi+4gm
Solax Power pocket Wifi+lan
Solax Power pocket Wifi+lan 2.0
Solax Power pocket Wifi 4.0
Type Values Removed Values Added
Description When connecting to the Solax Cloud MQTT server the username is the "registration number", which is the 10 character string printed on the SolaX Power Pocket device / the QR code on the device. The password is derived from the "registration number" using a proprietary XOR/transposition algorithm. Attackers with the knowledge of the registration numbers can connect to the MQTT server and impersonate the dongle / inverters.
Title Insecure Credential Generation for Solax Power Pocket WiFi models MQTT Cloud Connection
Weaknesses CWE-330
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
SEC-VLab
Published
Updated
Feb 12, 2026, 3:15 PM
Reserved
Feb 9, 2026, 9:43 AM
Status
Deferred
Published
Feb 12, 2026, 11:15 AM
Modified
Jun 17, 2026, 8:38 AM