Tenable Nessus Agent < 11.1.3 Arbitrary File Deletion (TNS-2026-12)

high Nessus Plugin ID 310144

Synopsis

An instance of Nessus Agent installed on the remote Windows system is affected by an arbitrary file deletion vulnerability.

Description

According to its self-reported version, the Tenable Nessus Agent running on the remote Windows host is prior to 11.1.3. It is, therefore, affected by an arbitrary file deletion vulnerability as referenced in the TNS-2026-12 advisory.

- A vulnerability exists in Nessus Agent on Windows where an authenticated attacker could create a junction, enabling the deletion of arbitrary files with SYSTEM privileges, potentially facilitating arbitrary code execution with elevated permissions. (CVE-2026-33694)

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 Nessus Agent 11.1.3 or later.

Plugin Details

Severity: High

ID: 310144

File Name: tenable_nessus_agent_TNS-2026-12.nasl

Version: 1.1

Type: Local

Agent: windows

Family: Windows

Published: 4/24/2026

Updated: 4/24/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

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

CVSS Score Source: CVE-2026-33694

CVSS v3

Risk Factor: High

Base Score: 8.2

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

CVSS v4

Risk Factor: High

Base Score: 8.6

Threat Score: 7.4

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

CPE: cpe:/a:tenable:nessus_agent

Required KB Items: installed_sw/Tenable Nessus Agent

Patch Publication Date: 4/23/2026

Vulnerability Publication Date: 4/23/2026

Reference Information

CVE: CVE-2026-33694

Detections

Analytics