CVE-2021-21513 Auth bypass in Dell Open Manage Server Administrator

What is CVE-2021-21513?

CVE-2021-21513 is a high-severity authentication bypass vulnerability in Dell Open Manage Server Administrator, published on 2 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-287

Which versions are affected by CVE-2021-21513?

It affects 1 product.

Products include Dell Openmanage Server Administrator.

How do I fix CVE-2021-21513?

No fix has been published for CVE-2021-21513 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2021-21513 being exploited?

There is no known exploitation of CVE-2021-21513 in the wild and no public exploit code.

Other vulnerabilities in Dell Open Manage Server Administrator

• CVE-2026-81442 Privilege escalation in OpenManage Server Administrator Managed Node (Patch) for Windows High 8.1
• CVE-2026-81475 Auth bypass in OpenManage Server Administrator Managed Node (Patch) for Windows High 8.1
• CVE-2026-81476 Dell OpenManage Server Administrator, versions prior to 11.1.0.3, contains an Improper Neutralization of Special Elements used in an OS Comm High 8.1
• CVE-2026-81478 Hardcoded credentials in OpenManage Server Administrator Managed Node (Patch) for Windows High 8.1
• CVE-2026-81474 Memory corruption in OpenManage Server Administrator Managed Node (Patch) for Windows High 7.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-47r6-8wvh-5vg2.