CVE-2025-15574
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Authentication Bypass in SolaX MQTT Server Enables Device Impersonation

Publication date: 2026-02-12

Last updated on: 2026-02-12

Assigner: SEC Consult Vulnerability Lab

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.

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Meta Information

Published
2026-02-12
Last Modified
2026-02-12
Generated
2026-07-06
AI Q&A
2026-02-12
EPSS Evaluated
2026-07-05
NVD
CVE-2025-15574
EUVD
EUVD-2025-207388

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
solax power_pocket *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-330 The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

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Executive Summary

This vulnerability involves the Solax Cloud MQTT server authentication process. The username used to connect is the device's registration number, a 10-character string found on the SolaX Power Pocket device or its QR code. The password is generated from this registration number using a proprietary XOR/transposition algorithm. Because the registration number is exposed on the device, attackers who know these numbers can connect to the MQTT server and impersonate the device, such as the dongle or inverters.

Impact Analysis

An attacker who knows the registration number can connect to the Solax Cloud MQTT server and impersonate legitimate devices like dongles or inverters. This could allow unauthorized access to device communications, potentially leading to manipulation or interception of data, disruption of device operations, or unauthorized control over the devices.

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