CVE-2021-21513

Name: CVE-2021-21513
Creator: NVD / NIST
Published: 2021-03-02T16:15:12.817+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 5.74%

Last modified Jun 17, 2026

CVE-2021-21513 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Dell EMC OpenManage Server Administrator (OMSA) version 9.5 Microsoft Windows installations with Distributed Web Server (DWS) enabled configuration contains an authentication bypass vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability to gain admin access on the affected system.. EPSS estimates a 5.74% chance of exploitation in the next 30 days.

Description

Dell EMC OpenManage Server Administrator (OMSA) version 9.5 Microsoft Windows installations with Distributed Web Server (DWS) enabled configuration contains an authentication bypass vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability to gain admin access on the affected system.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

5.74%

92.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Dell	Openmanage Server Administrator	< 9.4.0.3
Dell	Openmanage Server Administrator	>= 9.5.0.0, < 9.5.0.1

References

https://www.dell.com/support/kbdoc/en-us/000183670/dsa-2021-040-dell-emc-openmanage-server-administrator-omsa-security-update-for-multiple-vulnerabilitiesVendor Advisory
https://www.tenable.com/security/research/tra-2021-07Exploit, Third Party Advisory
https://www.dell.com/support/kbdoc/en-us/000183670/dsa-2021-040-dell-emc-openmanage-server-administrator-omsa-security-update-for-multiple-vulnerabilitiesVendor Advisory
https://www.tenable.com/security/research/tra-2021-07Exploit, Third Party Advisory

Timeline

Published: Mar 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21513?

How severe is CVE-2021-21513?

CVE-2021-21513 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 5.74% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21513?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21513?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST