---
id: CVE-2026-29797
title: >-
  No authentication is required when updating firmware or bootloader, making it
  easy for malicious files to be pushed to the device
summary: >-
  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
  w…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N'
cwe:
  - CWE-494
published: '2026-10-09'
updated: '2026-10-11'
sourceUpdated: '2026-10-11T17:17:04.457'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-29797'
references:
  - url: >-
      https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01'
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.hms-networks.com/'
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.hms-networks.com/cybersecurity'
    label: ics-cert@hq.dhs.gov
tags:
  - nvd
  - cve.org
epss: 0.00157
epssPercentile: 0.04832
ingestedAt: '2026-10-09T16:02:33.387Z'
vendor: Red Lion Controls
product: 700 Series
affected:
  - 700_series < Firmware Versions 3.11.0
  - 700_series < Bootloader Versions 2.0.6.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-11T16:49:35.238324Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.