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.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
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
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.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-33272 being exploited?
There is no known exploitation of CVE-2026-33272 in the wild and no public exploit code.
Sources
Also known as GHSA-c3q8-wxh6-699q.