CVE-2026-39460

HIGH 8.1

Red Lion Controls N-Tron 700 Series Insufficiently Protected Credentials

CVSS Score

8.1

EPSS Score

0.0%

EPSS Percentile

0th

Usernames and passwords, including the default factory credentials, are stored in plaintext within the configuration file. With administrator rights, the configuration file can be viewed through the CLI or they can be exported from the device through a TFTP transfer from the web interface. A TFTP transfer can be initiated through SNMP which does not require authentication.

CWE	CWE-522
Vendor	red lion controls
Product	700 series
Published	Oct 9, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

Red Lion Controls / 700 Series

0 < Firmware Versions 3.11.0 0 < Bootloader Versions 2.0.6.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

hms-networks.com: https://www.hms-networks.com/ hms-networks.com: https://www.hms-networks.com/cybersecurity cisa.gov: https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01 github.com: https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json

Credits

Gabrianna (Ria) Milloway of Idaho National Laboratory reported this vulnerability to CISA.