CVE-2025-15575: Missing Firmware Authenticity Checks in Solax Power Pocket WiFi models

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-12 · updated 2026-06-17
Weakness: CWE-494

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.

Affected products

SolaX Power Pocket WiFi+4GM: before 1.005.05
SolaX Power Pocket WiFi+LAN: before 1.009.02
SolaX Power Pocket WiFi+LAN 2.0: before 006.06
SolaX Power Pocket WiFi 3.0: before 3.022.03
SolaX Power Pocket WiFi 4.0: before 003.03

References

https://r.sec-consult.com/solax

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