CVE-2025-15575

Missing Firmware Authenticity Checks in Solax Power Pocket WiFi models

Published Feb 12, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
The firmware update functionality does not verify the authenticity of the supplied firmware update files. This allows attackers to flash malicious firmware update files on the device. Initial analysis of the firmware update functionality does not show any cryptographic checks (e.g. digital signature checks) on the supplied firmware update files. Furthermore, ESP32 security features such as secure boot are not used.

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': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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 The firmware update functionality does not verify the authenticity of the supplied firmware update files. This allows attackers to flash malicious firmware update files on the device. Initial analysis of the firmware update functionality does not show any cryptographic checks (e.g. digital signature checks) on the supplied firmware update files. Furthermore, ESP32 security features such as secure boot are not used.
Title Missing Firmware Authenticity Checks in Solax Power Pocket WiFi models
Weaknesses CWE-494
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
SEC-VLab
Published
Updated
Feb 12, 2026, 3:13 PM
Reserved
Feb 9, 2026, 9:43 AM
Status
Deferred
Published
Feb 12, 2026, 11:15 AM
Modified
Jun 17, 2026, 8:38 AM