by Kastro
Paper/Archive/CVE-2026-33367

CVE-2026-33367

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

EPSS 0.3%CVSS 9.3
critical.is priorityof 100
32
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 21.5.215 × 204.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
700 Series< Firmware Versions 3.11.0Firmware Versions 3.11.0CNA
700 Series< Bootloader Versions 2.0.6.1Bootloader Versions 2.0.6.1CNA

Scores by source

icscert (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
icscert (CNA)8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refhms-networks.comrefhms-networks.com/cybersecurityrefcisa.gov/news-events/ics-advisories/icsa-26-281-01refgithub.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json