High severity · published Oct 9, 2026
CVE-2026-39453
Red Lion Controls N-Tron 700 Series Reachable Assertion
8.3
CVSS
0.3%
EPSS
No
On KEV
Description
Navigating to a certain URL on the switch’s web server causes the switch to reboot. This can be automated using a tool like curl to create DoS conditions where the switch constantly reboots.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
7S
700 Series · Red Lion Controls
before Firmware Versions 3.11.0; before Bootloader Versions 2.0.6.1 · source: vendor
In the news
VulnerabilityHigh
Red Lion Controls N-Tron 700 Series
View CSAF Summary Successful exploitation of these vulnerabilities could allow a malicious user to access the device and gain administrative access. This access would allow the user to view, edit, and upload configuration files. Further, a malicious user can cause the switch to reboot by navigating to a specific URL on the device. This action can be scripted on the malicious user's local machine to cause continuous rebooting of the switch. The following versions of Red Lion Controls N-Tron 700 Series are affected: 700 Series <=Firmware_3.11.0 (CVE-2026-32645, CVE-2026-39460, CVE-2026-28745, CVE-2026-33367, CVE-2026-29797, CVE-2026-39453, CVE-2026-33272) 700 Series <=Bootloader_2.0.6.1 (CVE-2026-32645, CVE-2026-39460, CVE-2026-28745, CVE-2026-33367, CVE-2026-29797, CVE-2026-39453, CVE-2026-33272) CVSS Vendor Equipment v3 8.3 Red Lion Controls 700 Series 7 Vulnerabilities Use of Hard-coded Credentials, Insufficiently Protected Credentials, Storing Passwords in a Recoverable Format, Missing Authentication for Critical Function, Download of Code Without Integrity Check, Reachable Assertion, Authentication Bypass Using an Alternate Path or Channel Background Critical Infrastructure Sectors: Commercial Facilities, Communications, Critical Manufacturing, Information Technology Countries/Areas Deployed: Worldwide Company Headquarters Location: Sweden Vulnerabilities Expand All...
Oct 8, 2026·CISA Advisories
Affected product
7S
700 Series
Red Lion Controls
More from 700 Series
8.1
CVE-2026-33367
Red Lion Controls N-Tron 700 Series Missing Authentication for Critical Function
8.1
CVE-2026-39460
Red Lion Controls N-Tron 700 Series Insufficiently Protected Credentials
7.5
CVE-2026-28745
Red Lion Controls N-Tron 700 Series Storing Passwords in a Recoverable Format
7.1
CVE-2026-29797
Red Lion Controls N-Tron 700 Series Download of Code Without Integrity Check
6.0
CVE-2026-32645
Red Lion Controls N-Tron 700 Series Use of Hard-Coded Credentials