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CVE-2020-21224

63
FAUCET Score

CVE-2020-21224 is a critical Remote Code Execution (RCE) vulnerability affecting Inspur ClusterEngine V4.0. This flaw allows an unauthenticated remote attacker to execute arbitrary code by sending a specially crafted login packet to the control server. With a CVSS score of 9.8 (Critical) and an EPSS score indicating high exploitability, this vulnerability poses a significant risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While not currently listed in CISA's KEV catalog, Nuclei templates exist for detecting and exploiting this vulnerability, suggesting potential for active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:inspur:clusterengine:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
38.75%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Nuclei: CVE-2020-21224 · Mar 3, 2021
This CVE's current EPSS score of 0.3875 is in the 96th percentile among its peer group of 36,862 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

Remediation records are not available for this CVE.

References

github.com / NS-Sp4ce/Inspur
Third Party Advisory
github.com / NS-Sp4ce/Inspur/tree/master/ClusterEngineV4.0%20Vul
ExploitThird Party Advisory