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CVE-2021-43484

32
FAUCET Score

CVE-2021-43484 is a critical Remote Code Execution (RCE) vulnerability in Simple Client Management System 1.0, specifically within the create.php component. It arises from insufficient validation of file extensions during uploads, allowing attackers to execute arbitrary code. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network without authentication or user interaction, leading to complete compromise of confidentiality, integrity, and availability. Its FAUCET Risk Score is 90/100, and its EPSS score indicates a higher-than-average probability of exploitation. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. The vulnerability has received no community discussion or media coverage, suggesting low public awareness despite its high severity.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:simple_client_management_system_project:simple_client_management_system:1.0:*:*:*:*:*:*:*

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
3.31%
Probability of exploitation in next 30 days
EPSS Percentile
87.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0331 is in the 79th 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

Remediation records are not available for this CVE.

References

exploit-db.com / exploits/50094
Third Party AdvisoryVDB Entry