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Fencer Intel
medium 4.9

CVE-2026-33272 json

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

published last mo. modified 29d ago also EUVD-2026-95815

cvss
4.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits
0
none known

Summary

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.

Patch / fix

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

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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 4.9

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
partial
Assessed
29d ago

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 4.9 CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
CNA 4.0 6.8 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
CNA 4.0 6.8 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/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-288 Authentication Bypass Using an Alternate Path or Channel

References

Sources

Fencer Intel 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.