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Advisories

Red Lion Controls N-Tron 700 Series

CISA — Cybersecurity Advisories ·

View CSAF

Summary

Successful exploitation of these vulnerabilities could allow a malicious user to access the device and gain administrative access. This access would allow the user to view, edit, and upload configuration files. Further, a malicious user can cause the switch to reboot by navigating to a specific URL on the device. This action can be scripted on the malicious user's local machine to cause continuous rebooting of the switch.

The following versions of Red Lion Controls N-Tron 700 Series are affected:

  • 700 Series <=Firmware_3.11.0 (CVE-2026-32645, CVE-2026-39460, CVE-2026-28745, CVE-2026-33367, CVE-2026-29797, CVE-2026-39453, CVE-2026-33272)
  • 700 Series <=Bootloader_2.0.6.1 (CVE-2026-32645, CVE-2026-39460, CVE-2026-28745, CVE-2026-33367, CVE-2026-29797, CVE-2026-39453, CVE-2026-33272)
CVSS Vendor Equipment
v3 8.3 Red Lion Controls 700 Series
7 Vulnerabilities
Use of Hard-coded Credentials, Insufficiently Protected Credentials, Storing Passwords in a Recoverable Format, Missing Authentication for Critical Function, Download of Code Without Integrity Check, Reachable Assertion, Authentication Bypass Using an Alternate Path or Channel

Background

  • Critical Infrastructure Sectors: Commercial Facilities, Communications, Critical Manufacturing, Information Technology
  • Countries/Areas Deployed: Worldwide
  • Company Headquarters Location: Sweden

Vulnerabilities

Expand All + CVE-2026-32645 Default factory credentials with administrative access are enabled and persist even after configuring other administrator accounts. Read More

2 Affected Products

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Additional Metrics

Relevant CWE: CWE-798 Use of Hard-coded Credentials

CVSS Version Base Score Base Severity Vector String
3.1 6 MEDIUM CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
4.0 9.2 CRITICAL CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

View CVE Details

CVE-2026-39460 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. Read More

4 Affected Products

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Additional Metrics

Relevant CWE: CWE-522 Insufficiently Protected Credentials

CVSS Version Base Score Base Severity Vector String
3.1 8.1 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
4.0 9.3 CRITICAL CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

View CVE Details

CVE-2026-28745 Usernames and passwords, including the default credentials, are stored in the configuration file using weak encryption. If the default credentials are known by a malicious user, they could obtain other credentials on the system. Read More

6 Affected Products

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Additional Metrics

Relevant CWE: CWE-257 Storing Passwords in a Recoverable Format

CVSS Version Base Score Base Severity Vector String
3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 9.3 CRITICAL CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

View CVE Details

CVE-2026-33367 SNMP can be used to perform administrative actions such as retrieving configuration files, modifying user accounts or device settings, and initiating firmware or bootloader upgrades or downgrades-all without any authentication. Read More

8 Affected Products

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Additional Metrics

Relevant CWE: CWE-306 Missing Authentication for Critical Function

CVSS Version Base Score Base Severity Vector String
3.1 8.1 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
4.0 9.3 CRITICAL CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

View CVE Details

CVE-2026-29797 No authentication is required when updating firmware or bootloader, making it easy for malicious files to be pushed to the device. Additionally, anyone with the same software can scan a network for N-Tron devices and push/pull firmware without authenticating by using SNMP/TFTP. Read More

10 Affected Products

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Firmware_3.11.0

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgrade procedure document can be viewed here..

Mitigation
The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here

Red Lion Controls 700 Series: <=Bootloader_2.0.6.1

Product Status: known_affected

Remediations

Vendor fix
Red Lion controls recommends the following upgrades for the N-Tron 700 Series:

Mitigation
Upgrade to firmware version 3.11.1 or greater

Mitigation
Configure or disable the SNMP communities

Mitigation
Disable access to the web GUI

Mitigation
The upgra

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