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Tenable Sensor Proxy < 1.4.2 Code Injection (TNS-2026-21)

critical Nessus Plugin ID 333044

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Synopsis

An instance of Sensor Proxy installed on the remote system is affected by code injection vulnerability.

Description

According to its self-reported version, the Tenable Sensor Proxy running on the remote host is prior to 1.4.2. It is, therefore, affected by code injection vulnerability as referenced in the TNS-2026-21 advisory.

 - A vulnerability in Tenable Sensor Proxy allows a remote attacker to execute code with elevated privileges by inducing an operator to connect the sensor to an attacker-controlled host. (CVE-2026-18667)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Tenable Sensor Proxy 1.4.2 or later.

See Also

https://www.tenable.com/security/TNS-2026-21

Plugin Details

Severity: Critical

ID: 333044

File Name: sensorproxy_1_4_2_tns_2026_21.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 8/6/2026

Updated: 8/7/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.92

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-18667

CVSS v3

Risk Factor: Critical

Base Score: 9.6

Temporal Score: 8.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.1

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/a:tenable:sensorproxy

Exploit Ease: No known exploits are available

Patch Publication Date: 8/3/2026

Vulnerability Publication Date: 8/3/2024

Reference Information

CVE: CVE-2026-18667