Synopsis
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.
Out of caution and in line with best practice, Tenable has opted to address the potential impact of the issues. Tenable OT Patch tenable-ot-platform-137 fixes the issues around the misconfiguration to address the identified vulnerability.
Solution
Tenable has released Tenable OT Security and Tenable OT Security Enterprise Manager ISOs on March 18, 2026 that contains the fix for new installations of the product. The installation files can be obtained from the Tenable Downloads Portal (https://www.tenable.com/downloads/tenable-appliance).
Tenable has released the patch: tenable-ot-platform-137 to address this issue within the currently deployed products.
This page contains information regarding security vulnerabilities that may impact Tenable's products. This may include issues specific to our software, or due to the use of third-party libraries within our software. Tenable strongly encourages users to ensure that they upgrade or apply relevant patches in a timely manner.
Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.
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