CVE-2025-65855 Hardcoded credentials in n/a
Attackers with physical access can exploit hard-coded WiFi credentials and lack of firmware validation to execute arbitrary code on HelpFlash IoT devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-65855?
CVE-2025-65855 is a medium-severity vulnerability in n/a, published on 17 Dec 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
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.
Which versions are affected by CVE-2025-65855?
It affects 1 product.
Products include Netun Helpflash Iot Firmware.
How do I fix CVE-2025-65855?
No fix has been published for CVE-2025-65855 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-65855 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-65855 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-2g9h-hx22-r5p2.