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.
History

Thu, 18 Dec 2025 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Netun Solutions
Netun Solutions helpflash Iot
Vendors & Products Netun Solutions
Netun Solutions helpflash Iot

Wed, 17 Dec 2025 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 17 Dec 2025 17:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-319
CWE-494
CWE-798
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Wed, 17 Dec 2025 16:30:00 +0000

Type Values Removed Values Added
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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2025-12-17T00:00:00.000Z

Updated: 2025-12-17T16:52:08.227Z

Reserved: 2025-11-18T00:00:00.000Z

Link: CVE-2025-65855

cve-icon Vulnrichment

Updated: 2025-12-17T16:49:58.115Z

cve-icon NVD

Status : Received

Published: 2025-12-17T17:15:50.657

Modified: 2025-12-17T17:15:50.657

Link: CVE-2025-65855

cve-icon Redhat

No data.