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Fencer Vulns
high 8.1

CVE-2026-33367 json

Red Lion Controls N-Tron 700 Series Missing Authentication for Critical Function

published 2026-10-09 30 d ago modified 2026-10-11 28 d ago also EUVD-2026-95812

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

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.

Patch / fix

  • Red Lion Controls 700 Series 3.11.1, Bootloader Versions 2.0.6.1, Firmware Versions 3.11.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-281-01 updated cvss 8.1

Red Lion Controls N-Tron 700 Series - Update A

  • Red Lion Controls 700 Series <=Firmware_3.11.0, <=Bootloader_2.0.6.1
    affected: vendor fix, mitigation “The upgrade procedure document can be found at https://www.hms-networks.com/.” hms-networks.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
28 d ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CNA 4.0 9.3 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
CNA 4.0 9.3 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Red Lion Controls 700 Series

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.