Tenable Nessus <= 8.15.2 Local Privilege Escalation (TNS-2021-18)

medium Nessus Plugin ID 154776


Tenable Nessus running on the remote host is affected by a local privilege escalation vulnerability.


According to its self-reported version, the Tenable Nessus application running on the remote host is prior or equal to 8.15.2. It is, therefore, affected by a local privilege escalation vulnerability which could allow an authenticated, local administrator to run specific executables on the Nessus Agent host.

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


Upgrade to Tenable Nessus version 8.15.3, 10.0.0, or later.

See Also


Plugin Details

Severity: Medium

ID: 154776

File Name: nessus_tns_2021_18.nasl

Version: 1.8

Type: combined

Agent: windows, macosx, unix

Family: Misc.

Published: 11/1/2021

Updated: 2/8/2023

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent, Nessus

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2021-20135


Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

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

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

Vulnerability Information

CPE: cpe:/a:tenable:nessus

Required KB Items: installed_sw/Tenable Nessus

Exploit Ease: No known exploits are available

Patch Publication Date: 11/1/2021

Vulnerability Publication Date: 11/1/2021

Reference Information

CVE: CVE-2021-20135

IAVA: 2021-A-0564-S