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CVE-2021-21513

30
FAUCET Score

CVE-2021-21513 is a critical authentication bypass vulnerability affecting Dell EMC OpenManage Server Administrator (OMSA) version 9.5 installations on Microsoft Windows with Distributed Web Server (DWS) enabled. This flaw allows a remote, unauthenticated attacker to gain administrative access to the affected system. With a CVSS score of 9.8, it poses a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. Despite its critical severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 9.4.0.3CPE matchmatch criteria
cpe:2.3:a:dell:openmanage_server_administrator:*:*:*:*:*:*:*:*
>= 9.5.0.0, < 9.5.0.1CPE matchmatch criteria
cpe:2.3:a:dell:openmanage_server_administrator:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.74%
Probability of exploitation in next 30 days
EPSS Percentile
92.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0574 is in the 87th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (5)

asteriskvendor investigatingvia llm_extracted
ciscovendor investigatingvia llm_extracted
mariadbvendor investigatingvia llm_extracted
miniovendor investigatingvia llm_extracted
openrefinevendor investigatingvia llm_extracted

Vendor Advisories (5)

miniollm-minio-68a8e648ed17ac04CRITICAL

Dell EMC OpenManage Server Administrator Authentication Bypass

Mar 1, 2021
ciscollm-cisco-eed55cc34cacb0e7CRITICAL

Dell EMC OpenManage Server Administrator Authentication Bypass

Mar 1, 2021
asteriskllm-asterisk-d0e45af556e37d70CRITICAL

Dell EMC OpenManage Server Administrator Authentication Bypass

Mar 1, 2021
openrefinellm-openrefine-4a7f7f1c996dac35CRITICAL

Dell EMC OpenManage Server Administrator Authentication Bypass

Mar 1, 2021
mariadbllm-mariadb-649e06246e27a1a3CRITICAL

Dell EMC OpenManage Server Administrator Authentication Bypass

Mar 1, 2021

References

dell.com / support/kbdoc/en-us/000183670/dsa-2021-040-dell-emc-openmanage-server-administrator-omsa-security-update-for-multiple-vulnerabilities
Vendor Advisory
tenable.com / security/research/tra-2021-07
ExploitThird Party Advisory