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

published 2026-10-09 30 d ago modified 2026-10-11 28 d ago also EUVD-2026-95813

cvss: 7.1; 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

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.

Patch / fix

fixed in 1

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

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 2026-10-15 cvss 7.1

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: 28 d ago (2026-10-11)

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
CNA	4.0	8.4	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N
CNA	4.0	8.4	CVSS:4.0/AV:N/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-494 Download of Code Without Integrity Check

References

Sources

CVE List CVE-2026-29797
NVD CVE-2026-29797

Fencer Vulns 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.

Summary