HOMEVULNERABILITIESCVE-2021-21513
CRITICAL

CVE-2021-21513

CWE-287Published: March 2, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

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.

NVD Source

Technical Analysis

CVE-2021-21513 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Dell1 product(s)
openmanage server administrator
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.dell.com/support/kbdoc/en-us/000183670/dsa-2021-040-dell-emc-openmanage-server-administrator-omsa-security-update-for-multiple-vulnerabilities
ADVISORYhttps://www.tenable.com/security/research/tra-2021-07
ADVISORYhttps://www.dell.com/support/kbdoc/en-us/000183670/dsa-2021-040-dell-emc-openmanage-server-administrator-omsa-security-update-for-multiple-vulnerabilities
ADVISORYhttps://www.tenable.com/security/research/tra-2021-07

All References (4)

→
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

Quick Facts

CVE IDCVE-2021-21513
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-287
CISA KEVNo
Affected1 vendor(s)
PublishedMar 2, 2021

Related CVEs (CWE-287)

CVE-2011-1519
10.0
CVE-2010-4279
10.0
CVE-2021-21538
10.0
CVE-2025-55241
10.0
CVE-2013-1080
10.0
CVE-2007-6234
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-21513 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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