# CVE-2026-33272: Red Lion Controls N-Tron 700 Series Authentication Bypass Using an Alternate Path or Channel

> An attacker with physical access can bypass authentication by booting the switch in factory mode to gain administrative control and persist configuration changes.

- **Severity:** Medium 6.8 (`CVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Oct 2026
- **Updated:** 11 Oct 2026
- **Also known as:** GHSA-c3q8-wxh6-699q

## What is CVE-2026-33272?

CVE-2026-33272 is a medium-severity authentication bypass vulnerability in Red Lion Controls 700 Series, published on 9 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A malicious user with physical access to the device can boot the switch from factory settings without authentication, use the default administrative credentials to obtain administrative access, and save changes to the configuration file so that they persist next time the switch boots normally.

Weakness: CWE-288 (Authentication Bypass Using an Alternate Path or Channel)

## Which versions are affected by CVE-2026-33272?


## How do I fix CVE-2026-33272?

No fix has been published for CVE-2026-33272 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-33272 being exploited?

There is no known exploitation of CVE-2026-33272 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-33272 and fix it if it is affected.

What it is: CVE-2026-33272 is a medium-severity authentication bypass vulnerability in Red Lion Controls 700 Series, published on 9 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-33272 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-2026-33272/ (Markdown: https://insights.sbomify.com/CVE-2026-33272/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33272
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33272
- OSV: https://osv.dev/vulnerability/CVE-2026-33272

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-33272/
Summaries are generated and may contain mistakes; the official description above is the record.