How severe is CVE-2021-43117?

CVE-2021-43117 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-2021-43117 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43117?

CVE-2021-43117 affects Fastadmin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43117?

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-2021-43117 published?

CVE-2021-43117 was published on 2021-12-13 and last updated on 2026-06-17.

CVE-2021-43117

CVE-2021-43117 is a critical-severity vulnerability in Fastadmin 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Fastadmin
Published: 2021-12-13
Last modified: 2026-06-17

Description

fastadmin v1.2.1 is affected by a file upload vulnerability which allows arbitrary code execution through shell access.

Frequently asked questions

What is CVE-2021-43117?: fastadmin v1.2.1 is affected by a file upload vulnerability which allows arbitrary code execution through shell access.
How severe is CVE-2021-43117?: CVE-2021-43117 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-2021-43117 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43117?: CVE-2021-43117 affects Fastadmin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43117?: 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-2021-43117 published?: CVE-2021-43117 was published on 2021-12-13 and last updated on 2026-06-17.

References

https://github.com/ambitiousleader/some-automated-script/issues/1

Affected products (1)

cpe:2.3:a:fastadmin:fastadmin:1.2.1:*:*:*:*:*:*:*

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