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  4. CVE 2026 33367 red lion controls n tron 700 series missing
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Back to active CVEs
Critical · CVSS 9.3CVE-2026-33367

Red Lion Controls N-Tron 700 Series Missing Authentication for Critical FunctionCVE-2026-33367

Answer in brief

CVE-2026-33367 records a Critical severity (CVSS 9.3) vulnerability in Red Lion Controls N-Tron 700 Series Missing Authentication for Critical Function. The current sources do not mark it as known exploited. The current feed maps Red Lion Controls/700 Series (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 9, 2026Updated Oct 9, 2026Source checked Oct 9, 2026First seen by HOL Oct 9, 2026Material review Oct 9, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Lion Controls/700 Series (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Lion Controls/700 Seriesgeneric>=0 <Firmware Versions 3.11.0 || >=0 <Bootloader Versions 2.0.6.1Firmware Versions 3.11.0, Bootloader Versions 2.0.6.1, Firmware, Bootloader

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Lion Controls/700 Series.
  2. 2Review the reported fix. Source-reported 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 .

Evidence timeline and material changes

  1. Published upstream

    Oct 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 9, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • CISA Known Exploited Vulnerabilities catalogcisa.gov
  • Source referencehms-networks.com
  • Source referencehms-networks.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Red Lion Controls N-Tron 700 Series Storing Passwords in a Recoverable FormatSame red lion controls/700 series package
  • Red Lion Controls N-Tron 700 Series Download of Code Without Integrity CheckSame red lion controls/700 series package
  • Red Lion Controls N-Tron 700 Series Use of Hard-Coded CredentialsSame red lion controls/700 series package
  • Red Lion Controls N-Tron 700 Series Authentication Bypass Using an Alternate Path or ChannelSame red lion controls/700 series package
  • Red Lion Controls N-Tron 700 Series Reachable AssertionSame red lion controls/700 series package
  • Red Lion Controls N-Tron 700 Series Insufficiently Protected CredentialsSame red lion controls/700 series package

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-306
Source
CVE List V5
Source checked
Oct 9, 2026
References
4 linked sources
Open source record