CVE-2026-29797

HIGH 7.1

Red Lion Controls N-Tron 700 Series Download of Code Without Integrity Check

CVSS Score

7.1

EPSS Score

0.0%

EPSS Percentile

0th

No authentication is required when updating firmware or bootloader, making it easy for malicious files to be pushed to the device. Additionally, anyone with the same software can scan a network for N-Tron devices and push/pull firmware without authenticating by using SNMP/TFTP.

CWE	CWE-494
Vendor	red lion controls
Product	700 series
Published	Oct 9, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

None

Affected Versions

Red Lion Controls / 700 Series

0 < Firmware Versions 3.11.0 0 < Bootloader Versions 2.0.6.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

hms-networks.com: https://www.hms-networks.com/ hms-networks.com: https://www.hms-networks.com/cybersecurity cisa.gov: https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01 github.com: https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json

Credits

Gabrianna (Ria) Milloway of Idaho National Laboratory reported this vulnerability to CISA.