CVE-2025-65855: CVE-2025-65855 is a
Source CVE Database V5
Not known to be exploited · CVSS 6.6 Medium.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 17 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
- Immediate mitigation should include restricting physical access to HelpFlash IoT devices to trusted personnel only, minimizing the opportunity for attackers to activate OTA mode.
- Network monitoring should be implemented to detect rogue WiFi access points and unusual device connections, especially during OTA update windows.
- Organizations should contact Netun Solutions for firmware updates that implement proper authentication of update servers and cryptographic firmware signature validation to prevent unauthorized firmware installation.
- If firmware updates are unavailable, consider disabling OTA update functionality or physically securing the OTA activation mechanism if possible.
- Conduct regular audits of device configurations and logs to detect anomalies indicative of compromise.
- Educate staff on the risks of physical device tampering and the importance of reporting suspicious activity.
- Implement network segmentation to isolate IoT devices from critical infrastructure and sensitive networks to limit lateral movement in case of compromise.
- Maintain an inventory of all deployed HelpFlash IoT devices to ensure timely response and patch management once updates become available.
Description
CVE-2025-65855 is a vulnerability in the OTA firmware update mechanism of Netun Solutions HelpFlash IoT emergency signaling devices. The devices use hard-coded WiFi credentials shared across all units and lack authentication for update servers or firmware signature validation. An attacker with brief physical access can trigger OTA mode by pressing a button for 8 seconds, then create a malicious WiFi access point using the known credentials. This allows the attacker to deliver malicious firmware via unauthenticated HTTP, leading to arbitrary code execution on a safety-critical device. The CVSS score is 6.6 (medium severity), reflecting the need for physical access and user interaction but high impact on confidentiality, integrity, and availability. No known exploits are currently reported in the wild. European organizations relying on these devices for emergency signaling could face significant operational and safety risks if exploited. Mitigation requires firmware updates with proper authentication and signature validation, restricting physical access, and monitoring device behavior for anomalies.