# CVE-2026-39460: Red Lion Controls N-Tron 700 Series plaintext credential storage in configuration

Source: https://junglewise.ai/threats/cve-2026-39460-usernames-and-passwords-including-the-default-factory-credentials  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-09. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-39460 · Severity: high · CVSS 8.1 · Published 2026-10-09

The Red Lion N-Tron 700 Series network switch stores usernames and passwords, including factory default credentials, in plaintext in its configuration file. An attacker with administrator access can view these credentials through the CLI or export the entire configuration via TFTP. More critically, SNMP can initiate a TFTP transfer without authentication, allowing an unauthenticated attacker to retrieve the configuration and extract all stored credentials, potentially compromising administrative access to the device.

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-2026-39460 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-39460 being exploited in the wild.

**How severe is CVE-2026-39460?** High severity, with a CVSS score of 8.1, 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-2026-39460?** Yes: fixed in N-Tron 700 Series Firmware 3.11.1 or greater. Until then: Configure or disable SNMP communities to prevent unauthenticated TFTP transfer initiation. Disable access to the web GUI to restrict configuration export capabilities. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-39460 attacked?** It is attacked over the network or from the adjacent network, in a network appliance.

**Am I affected by CVE-2026-39460?** 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.

## How to fix

- Fixed in N-Tron 700 Series Firmware 3.11.1 or greater

Configure or disable SNMP communities to prevent unauthenticated TFTP transfer initiation. Disable access to the web GUI to restrict configuration export capabilities.

## Technical details

Credentials are stored in plaintext in the device configuration file, which can be accessed or exported by an administrator via CLI or web GUI TFTP transfer. The vulnerability is compounded because SNMP (which does not require authentication on this device) can initiate TFTP configuration exports, allowing an unauthenticated network-adjacent attacker to retrieve the configuration and extract all plaintext credentials including default factory passwords.

## Affected products

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

## Timeline

- 2026-10-09: disclosed
- 2026-10-15: advisory

## References

- [https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json](https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json)
- [https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01](https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01)

## Related threats

- [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)
- [Default factory credentials with administrative access are enabled and persist even after configuring other administrator accounts.](https://junglewise.ai/threats/cve-2026-32645-red-lion-controls-n-tron-700-series)
- [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)