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TI-2025-40484 Aliases CVE-2025-65855GHSA-2g9h-hx22-r5p2

The OTA firmware update mechanism in Netun Solutions HelpFlash IoT (firmware…

Priority MEDIUM 64CWE-319Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure, Code execution, Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-319, CWE-494 and CWE-798.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00104 1st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:netun:helpflash_iot_firmware:18_178_221102_ascii_pro_1r5_50:*:*:*:*:*:*:*18_178_221102_ascii_pro_1r5_50VulnerableNetun
cpe:2.3:h:netun:helpflash_iot:-:*:*:*:*:*:*:*not specified by NVDRunning onNetun
  • cpe:2.3:o:netun:helpflash_iot_firmware:18_178_221102_ascii_pro_1r5_50:*:*:*:*:*:*:* Versions 18_178_221102_ascii_pro_1r5_50 Vulnerable ·Netun
  • cpe:2.3:h:netun:helpflash_iot:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Netun

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-65855
  2. 2026-10-03 Alias added: GHSA-2g9h-hx22-r5p2

References

Advisory 1

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences