Vulnerability Description
The OTA firmware update mechanism in Netun Solutions HelpFlash IoT (firmware v18_178_221102_ASCII_PRO_1R5_50) uses hard-coded WiFi credentials identical across all devices and does not authenticate update servers or validate firmware signatures. An attacker with brief physical access can activate OTA mode (8-second button press), create a malicious WiFi AP using the known credentials, and serve malicious firmware via unauthenticated HTTP to achieve arbitrary code execution on this safety-critical emergency signaling device.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Netun | Helpflash Iot Firmware | 18_178_221102_ascii_pro_1r5_50 |
| Netun | Helpflash Iot | - |
Related Weaknesses (CWE)
References
- https://docs.espressif.com/projects/esp-idf/en/v4.3.2/Product
- https://luismirandaacebedo.github.io/CVE-2025-65855/Third Party Advisory
FAQ
What is CVE-2025-65855?
CVE-2025-65855 is a vulnerability with a CVSS score of 6.6 (MEDIUM). The OTA firmware update mechanism in Netun Solutions HelpFlash IoT (firmware v18_178_221102_ASCII_PRO_1R5_50) uses hard-coded WiFi credentials identical across all devices and does not authenticate up...
How severe is CVE-2025-65855?
CVE-2025-65855 has been rated MEDIUM with a CVSS base score of 6.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-65855?
Check the references section above for vendor advisories and patch information. Affected products include: Netun Helpflash Iot Firmware, Netun Helpflash Iot.