Vulnerability · Published Dec 17, 2025 · Assigned by mitre
CVE-2025-65855
Medium 6.6
In plain English
A medium-severity hard-coded credentials in the affected software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official 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.
Affected products (as reported)
Weakness: CWE-798, CWE-494, CWE-319 · Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H