CVE-2026-4433 Misconfiguration in Tenable Operation Technology
Misconfigured SSH settings in Tenable OT allow attackers to exfiltrate system information, potentially aiding further compromise.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-4433?
CVE-2026-4433 is a low-severity vulnerability in Tenable, Inc. Tenable Operation Technology, published on 24 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An SSH misconfigurations exists in Tenable OT that led to the potential exfiltration of socket, port, and service information via the ostunnel user and GatewayPorts. This could be used to potentially glean information about the underlying system and give an attacker information that could be used to attempt to compromise the host.
Weakness: CWE-16
Which versions are affected by CVE-2026-4433?
It affects 1 product.
Products include Tenable Operational Technology Exposure.
How do I fix CVE-2026-4433?
No fix has been published for CVE-2026-4433 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-4433 being exploited?
There is no known exploitation of CVE-2026-4433 in the wild and no public exploit code.
Sources
Also known as GHSA-r3v4-cfx9-jmvv.