VULNERABILITY INTELLIGENCE

CVE-2025-65855

CVSS score6.6 MEDIUM
EPSS probability0.10%
CISA KEVNot currently listed
Published2025-12-17
Last modified2026-10-13
CVSS vectorCVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-319

Primary references