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CVE-2026-4433

An SSH misconfigurations exists in Tenable OT that led to the potential exfiltration of socket, port, and service information via the…

Low1.9EPSS 0.17%
Published
Updated
Reserved
Assigned by
tenable

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.

Timeline

  1. ID reserved

    By tenable

  2. · 5 days later

    Published

  3. · 1 day later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-4433, by who scored it
Scored byCVSSScoreVector
tenableCNA (assigner)4.0Low1.9CVSS: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
NVDNVD · Analyzed4.0Low1.9CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.17% · top 94% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 1.9.

Weakness

Affected products

What to do

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.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .