# CVE-2026-39460: Red Lion Controls N-Tron 700 Series Insufficiently Protected Credentials

> Attackers can retrieve plaintext credentials via unauthenticated SNMP-triggered TFTP transfers, leading to unauthorized access and data exposure on Red Lion N-Tron devices.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Oct 2026
- **Updated:** 12 Oct 2026
- **Also known as:** GHSA-m3xp-3gmv-xj2x

## What is CVE-2026-39460?

CVE-2026-39460 is a critical vulnerability in Red Lion Controls 700 Series, published on 9 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Usernames and passwords, including the default factory credentials, are stored in plaintext within the configuration file. With administrator rights, the configuration file can be viewed through the CLI or they can be exported from the device through a TFTP transfer from the web interface. A TFTP transfer can be initiated through SNMP which does not require authentication.

Weakness: CWE-522 (Insufficiently Protected Credentials)

## Which versions are affected by CVE-2026-39460?


## How do I fix CVE-2026-39460?

No fix has been published for CVE-2026-39460 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-39460 being exploited?

There is no known exploitation of CVE-2026-39460 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-39460 and fix it if it is affected.

What it is: CVE-2026-39460 is a critical vulnerability in Red Lion Controls 700 Series, published on 9 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-39460 in the wild and no public exploit code.

Affected product: Red Lion Controls 700 Series. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-39460/ (Markdown: https://insights.sbomify.com/CVE-2026-39460/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-39460
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-39460
- OSV: https://osv.dev/vulnerability/CVE-2026-39460

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-39460/
Summaries are generated and may contain mistakes; the official description above is the record.