Vulnerability · Published Mar 24, 2026 · Assigned by tenable

CVE-2026-4433

Low 1.9

In plain English

A low-severity security flaw in Tenable Operation Technology from Tenable, Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).

Severity (CVSS 4.0)1.9Low

Exploit odds (30 days)0.2%top 93.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Tenable, Inc.	Tenable Operation Technology	3.18.58 – through 4.2.40

Weakness: CWE-16 · 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

References

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