CVE-2026-33272

Red Lion Controls N-Tron 700 Series Authentication Bypass Using an Alternate Path or Channel

Published Oct 9, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
A malicious user with physical access to the device can boot the switch from factory settings without authentication, use the default administrative credentials to obtain administrative access, and save changes to the configuration file so that they persist next time the switch boots normally.

Remediation

Vendor Solution

Red Lion controls recommends the following upgrades for the N-Tron 700 Series: * Upgrade to firmware version 3.11.1 or greater * Configure or disable the SNMP communities * Disable access to the web GUI The upgrade procedure document can be viewed here https://www.hms-networks.com/ . The advisory issued by HMS Networks regarding these vulnerabilities can be viewed here https://www.hms-networks.com/cybersecurity .

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Red Lion Controls
Red Lion Controls 700 Series
Vendors & Products Red Lion Controls
Red Lion Controls 700 Series
Type Values Removed Values Added
Description A malicious user with physical access to the device can boot the switch from factory settings without authentication, use the default administrative credentials to obtain administrative access, and save changes to the configuration file so that they persist next time the switch boots normally.
Title Red Lion Controls N-Tron 700 Series Authentication Bypass Using an Alternate Path or Channel
Weaknesses CWE-288
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Oct 11, 2026, 5:05 PM
Reserved
Apr 8, 2026, 7:28 PM
Status
Awaiting Analysis
Published
Oct 9, 2026, 3:17 PM
Modified
Oct 11, 2026, 5:17 PM