Description
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.
Published: 2026-10-09
Score: 9.3 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Remote code execution
Action: Immediate Patch
AI Analysis

Impact

The vulnerability is a missing authentication mechanism in the SNMP interface of the N‑Tron 700 Series, allowing an attacker to perform administrative actions—including retrieving configuration files, modifying user accounts, and upgrading or downgrading firmware—without credentials. This absence of authentication means an unauthenticated network attacker can effectively execute arbitrary code or manipulate the device’s behavior, potentially leading to full system compromise.

Affected Systems

Red Lion Controls N‑Tron 700 Series devices that have not been upgraded to firmware version 3.11.1 or greater are affected. The advisory does not list specific sub‑models, so all units in the 700 Series are presumed vulnerable until the firmware update is applied.

Risk and Exploitability

The CVSS score of 9.3 classifies this flaw as Critical, and the lack of authentication makes it trivial for a network‑enabled attacker to exploit the SNMP service. No EPSS data is available, and the flaw is not listed in the CISA KEV catalog, but the potential for remote code execution and the broad exposure across the 700 Series warrant immediate attention. The likely attack vector is a remote SNMP request sent over the network, requiring only network connectivity to the device.

Generated by OpenCVE AI on October 9, 2026 at 15:22 UTC.

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 .


OpenCVE Recommended Actions

  • Upgrade the N‑Tron 700 Series firmware to version 3.11.1 or later
  • Configure SNMP to use only authenticated communities or disable SNMP communities entirely
  • Disable or restrict access to the web GUI to prevent unauthorized configuration changes

Generated by OpenCVE AI on October 9, 2026 at 15:22 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Mon, 12 Oct 2026 08:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Sun, 11 Oct 2026 12:45:00 +0000

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

Fri, 09 Oct 2026 14:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Red Lion Controls N-Tron 700 Series Missing Authentication for Critical Function
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 9.3, 'vector': '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'}


Subscriptions

Red Lion Controls 700 Series
cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2026-10-11T17:05:28.710Z

Reserved: 2026-04-08T19:28:49.496Z

Link: CVE-2026-33367

cve-icon Vulnrichment

Updated: 2026-10-11T16:55:35.362Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-09T15:17:14.340

Modified: 2026-10-11T17:17:04.760

Link: CVE-2026-33367

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-11T12:26:31Z

Weaknesses
  • CWE-306

    Missing Authentication for Critical Function