Detections
Analytics

Dell (CVE-2021-21538)

critical Tenable OT Security Plugin ID 501901

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Dell EMC iDRAC9 versions 4.40.00.00 and later, but prior to 4.40.10.00, contain an improper authentication vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability to gain access to the virtual console.

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://www.dell.com/support/kbdoc/000186420

Plugin Details

Severity: Critical

ID: 501901

File Name: tenable_ot_dell_CVE-2021-21538.nasl

Version: 1.2

Type: Remote

Family: Tenable.ot

Published: 1/17/2024

Updated: 6/19/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 95.11

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS Score Source: CVE-2021-21538

CVSS v3

Risk Factor: Critical

Base Score: 10

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

Vulnerability Information

CPE: cpe:/o:dell:idrac9_firmware

Required KB Items: Tenable.ot/Dell

Exploit Ease: No known exploits are available

Patch Publication Date: 7/29/2021

Vulnerability Publication Date: 7/29/2021

Reference Information

CVE: CVE-2021-21538

CWE: 287