# CVE-2026-39453: Default factory credentials with administrative access are enabled and persist even after configuring other administrator accounts.

Source: https://junglewise.ai/threats/cve-2026-32645-red-lion-controls-n-tron-700-series  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-09. Updated: 2026-10-08  
License: CC BY 4.0 with a link back

CVE-2026-39453 · Severity: high · CVSS 6 · Published 2026-10-09

Red Lion Controls N-Tron 700 Series is an industrial network switch used in critical infrastructure. Multiple vulnerabilities allow unauthenticated attackers to gain administrative access, modify configuration files, and remotely reboot the device. An attacker could exploit this to disrupt production operations, cause cascading outages across connected systems, or persist backdoors in network infrastructure.

Technologies: [Red Lion Controls N-Tron 700 Series](https://junglewise.ai/threats/technologies/n-tron-700-series). Vendors: [Red Lion Controls](https://junglewise.ai/threats/vendors/red-lion-controls).

## Quick answers

**Is CVE-2026-39453 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-39453 being exploited in the wild.

**How severe is CVE-2026-39453?** High severity, with a CVSS score of 6, published 9 October 2026.

**Which products and versions are affected?** Red Lion Controls N-Tron 700 Series Firmware 3.11.0 and earlier; Bootloader 2.0.6.1 and earlier.

**Is there a fix for CVE-2026-39453?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-39453 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-39453?** Check whether you run Red Lion Controls N-Tron 700 Series at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

Seven distinct vulnerabilities in the N-Tron 700 Series firmware and bootloader allow unauthenticated network access to administrative functions, including configuration file access and device reboot capabilities. The vulnerabilities can be exploited remotely over the network to achieve full administrative control or trigger denial of service via scripted reboots. No authentication or user interaction is required.

## Affected products

- Red Lion Controls N-Tron 700 Series Firmware 3.11.0 and earlier; Bootloader 2.0.6.1 and earlier

## Identifiers

- CVE-2026-39453
- CVE-2026-39460
- CVE-2026-33367
- CVE-2026-29797
- CVE-2026-32645
- CVE-2026-28745
- CVE-2026-33272

## Timeline

- 2026-10-08: disclosed

## Related threats

- [Red Lion Controls N-Tron 700 Series plaintext credential storage in configuration](https://junglewise.ai/threats/cve-2026-39460-usernames-and-passwords-including-the-default-factory-credentials)
- [Red Lion Controls N-Tron 700 Series denial of service via web URL](https://junglewise.ai/threats/cve-2026-39453-navigating-to-a-certain-url-on-the-switch-s-web-server-causes-the)
- [Red Lion Controls N-Tron 700 Series SNMP unauthenticated administrative access](https://junglewise.ai/threats/cve-2026-33367-snmp-can-be-used-to-perform-administrative-actions-such-as)
- [Red Lion Controls N-Tron 700 Series physical reset to factory settings](https://junglewise.ai/threats/cve-2026-33272-a-malicious-user-with-physical-access-to-the-device-can-boot-the)
- [Red Lion Controls N-Tron 700 Series firmware authentication bypass](https://junglewise.ai/threats/cve-2026-29797-no-authentication-is-required-when-updating-firmware-or)