CVE-2025-65855 (GCVE-0-2025-65855)

Vulnerability from cvelistv5 – Published: 2025-12-17 00:00 – Updated: 2025-12-17 16:52
VLAI
Summary
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.
Severity
6.6 (Medium)
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-17 16:48 UTC
CWE
  • n/a
  • CWE-798 - Use of Hard-coded Credentials
  • CWE-494 - Download of Code Without Integrity Check
  • CWE-319 - Cleartext Transmission of Sensitive Information
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2361 records in the last 180 days details
References
Show details on NVD website
To clipboard 

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