Detections
Analytics

Mikro Tik (CVE-2020-20221)

medium Tenable OT Security Plugin ID 502006

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Mikrotik RouterOs before 6.44.6 (long-term tree) suffers from an uncontrolled resource consumption vulnerability in the /nova/bin/cerm process. An authenticated remote attacker can cause a Denial of Service due to overloading the systems CPU.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

See Also

https://cwe.mitre.org/data/definitions/400.html

https://seclists.org/fulldisclosure/2020/May/30

https://seclists.org/fulldisclosure/2021/May/1

Plugin Details

Severity: Medium

ID: 502006

File Name: tenable_ot_mikrotik_CVE-2020-20221.nasl

Version: 1.2

Type: Remote

Family: Tenable.ot

Published: 2/27/2024

Updated: 6/19/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Medium

Base Score: 6.8

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

CVSS Score Source: CVE-2020-20221

CVSS v3

Risk Factor: Medium

Base Score: 6.5

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

Vulnerability Information

CPE: cpe:/o:mikrotik:routeros:::~~ltr~~~

Required KB Items: Tenable.ot/MikroTik

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/21/2021

Vulnerability Publication Date: 7/21/2021

Reference Information

CVE: CVE-2020-20221

CWE: 400