Openmanage Server Administrator
CVE-2021-21513
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK
2 techniques across 2 tactics: Defense Evasion, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A remote attacker could bypass authentication mechanisms to gain unauthorized access by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
Dell EMC OpenManage Server Administrator (OMSA) version 9.5 Microsoft Windows installations with Distributed Web Server (DWS) enabled configuration contains an authentication bypass vulnerability. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. 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. Affected products include: Dell Openmanage Server Administrator. Version information: version 9.5.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)NVD
Directory traversal vulnerability in Dell OpenManage Server Administrator (OMSA) 8.2 allows remote authenticated adminis
Dell OpenManage Server Administrator, versions 11.0.1.0 and prior, contains an improper access control vulnerability. Ra
Multiple cross-site scripting (XSS) vulnerabilities in Dell OpenManage Server Administrator 6.5.0.1, 7.0.0.1, and 7.1.0.
Dell OpenManage Server Administrator, versions 11.0.1.0 and prior, contains an improper input validation vulnerability.
Dell OpenManage Server Administrator, versions 11.0.1.0 and prior, contains a Local Privilege Escalation vulnerability v
Stack-based buffer overflow in Dell OpenManage Server Administrator (OMSA) versions prior to 11.1.0.3 allows an attacker
Path traversal (CWE-22) in Dell OpenManage Server Administrator (OMSA) versions prior to 11.1.0.3 lets a low-privileged,
Open redirect vulnerability in Dell OpenManage Server Administrator (OMSA) before 7.3.0 allows remote attackers to redir
Local denial of service in Dell OpenManage Server Administrator (OMSA) versions prior to 11.1.0.3 allows an unauthentica
Dell EMC OpenManage Server Administrator (OMSA) versions 9.5 and prior contain a path traversal vulnerability. Rated med
Cross-site scripting (XSS) vulnerability in Dell OpenManage Server Administrator (OMSA) before 6.5.0.1, 7.0 before 7.0.0
GitHub PoC
Exploit-DB