Dell OpenManage Server Administrator Authentication Bypass (DSA-2021-040)

critical Nessus Plugin ID 148825


A server management application on the remote host is affected by an authentication bypass vulnerability.


The Dell OpenManage Server Administrator (OMSA) running on the remote host is affected by an authentication bypass vulnerability due to improper sanitization of user-supplied input to a web API request. An unauthenticated, remote attacker can exploit this, via a crafted message, to bypass authentication to gain admin access on the system.


Install Dell EMC OpenManage Server Administrator / or later.

See Also

Plugin Details

Severity: Critical

ID: 148825

File Name: dell_omsa_cve-2021-21513.nbin

Version: 1.14

Type: remote

Family: CGI abuses

Published: 4/20/2021

Updated: 5/3/2022

Risk Information

CVSS Score Source: manual

CVSS Score Rationale: Successful exploit allows complete access to idrac.


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 9.3

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C


Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

CPE: cpe:/a:dell:openmanage_server_administrator

Required KB Items: www/dell_omsa

Exploited by Nessus: true

Patch Publication Date: 3/1/2021

Vulnerability Publication Date: 3/1/2021

Reference Information

CVE: CVE-2021-21513