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01 Record

CVE-2025-65855

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

MediumPUBLISHEDCNA: mitre
CNA base score6.6 CVSS v3.xCVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

02 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

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.10% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 1.1% of scored records. A rank, not a probability.
NVD base score
6.6 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-13.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-12-17 00:00Z10 MO AGO
Last updated
2025-12-17 16:52Z10 MO AGO
Reserved
2025-11-18
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Medium (CVSS 6.6)
CNA CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-319Cleartext Transmission of Sensitive InformationBase
  • CWE-494Download of Code Without Integrity CheckBase
  • CWE-798Use of Hard-coded CredentialsBase
Data version
5.2
Document digest
23f49f7acadd0b7294c631fdb887d4f25af113756b098d8d4020184800fdc4d9

05 Affected products

VendorProductVersionsPlatforms
netunhelpflash_iotNot specified—
netunhelpflash_iot_firmwareNot specified—

06 References