How severe is CVE-2021-43484?

CVE-2021-43484 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-43484 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43484?

CVE-2021-43484 affects Simple Client Management System Project Simple Client Management System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43484?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-43484 published?

CVE-2021-43484 was published on 2022-03-31 and last updated on 2026-06-17.

CVE-2021-43484

CVE-2021-43484 is a critical-severity vulnerability in Simple Client Management System Project Simple Client Management System with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Simple Client Management System Project Simple Client Management System
Published: 2022-03-31
Last modified: 2026-06-17

Description

A Remote Code Execution (RCE) vulnerability exists in Simple Client Management System 1.0 in create.php due to the failure to validate the extension of the file being sent in a request.

Frequently asked questions

What is CVE-2021-43484?: A Remote Code Execution (RCE) vulnerability exists in Simple Client Management System 1.0 in create.php due to the failure to validate the extension of the file being sent in a request.
How severe is CVE-2021-43484?: CVE-2021-43484 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-43484 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43484?: CVE-2021-43484 affects Simple Client Management System Project Simple Client Management System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43484?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-43484 published?: CVE-2021-43484 was published on 2022-03-31 and last updated on 2026-06-17.

References

https://www.exploit-db.com/exploits/50094

Affected products (1)

cpe:2.3:a:simple_client_management_system_project:simple_client_management_system:1.0:*:*:*:*:*:*:*

More vulnerabilities in Simple Client Management System Project Simple Client Management System

CVE-2022-29984 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/admin/?page=client/view_client&id=.
CVE-2022-29983 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/admin/?page=invoice/view_invoice&id=.
CVE-2022-29982 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/admin/maintenance/manage_service.php?id=.
CVE-2022-29981 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/classes/Users.php?f=delete.
CVE-2022-29980 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/admin/?page=user/manage_user&id=.
CVE-2022-29979 — Critical (CVSS 9.8): Simple Client Management System 1.0 is vulnerable to SQL Injection via /cms/classes/Master.php?f=delete_designation.

All CVEs affecting Simple Client Management System Project Simple Client Management System →

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