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.

Subscriptions

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Tracking

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Advisories

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Fixes

Solution

Tenable has released Tenable OT Security and Tenable OT Security Enterprise Manager ISOs 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 to address this issue within the currently deployed products.


Workaround

No workaround given by the vendor.

History

Tue, 24 Mar 2026 20:30:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-16
References
Metrics cvssV4_0

{'score': 1.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P'}


cve-icon MITRE

Status: PUBLISHED

Assigner: tenable

Published:

Updated: 2026-03-24T20:26:15.338Z

Reserved: 2026-03-19T16:38:57.418Z

Link: CVE-2026-4433

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-24T21:16:29.687

Modified: 2026-03-24T21:16:29.687

Link: CVE-2026-4433

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses