CVE-2026-4433 — MEDIUM (4.3)

Q: How severe is CVE-2026-4433?

CVE-2026-4433 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-4433?

Check the references section above for vendor advisories and patch information. Affected products include: Tenable Operational Technology Exposure, Linux Linux Kernel.

Vulnerability 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.

CVSS Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Tenable	Operational Technology Exposure	>= 3.18.58, < 4.2.40
Linux	Linux Kernel	-

Related Weaknesses (CWE)

CWE-16

References

https://www.tenable.com/security/tns-2026-9PatchVendor Advisory

FAQ

What is CVE-2026-4433?

CVE-2026-4433 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 ...

How severe is CVE-2026-4433?

CVE-2026-4433 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-4433?

Check the references section above for vendor advisories and patch information. Affected products include: Tenable Operational Technology Exposure, Linux Linux Kernel.