What’s Vulnerable › Vulnerabilities

CVE-2026-39460: Red Lion Controls N-Tron 700 Series Insufficiently Protected Credentials

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-09 · updated 2026-10-12
• Weakness: CWE-522

Description

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.

Affected products

• Red Lion Controls 700 Series: before Firmware Versions 3.11.0; before Bootloader Versions 2.0.6.1 — fixed in Bootloader Versions 2.0.6.1, Firmware Versions 3.11.0

How to fix

Upgrade to a fixed version: Red Lion Controls 700 Series Bootloader Versions 2.0.6.1, Firmware Versions 3.11.0. Check the vendor advisory for mitigations.

References

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

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